Single-Horn Rhinoceros King

The Ruyi Jingu Bang was gone, the Golden Elixir Sands of the Eighteen Arhats were gone, the fire of the Fire-Deity was gone, and the water of the Water-Deity was gone. A single demon, using a single ring, had emptied the armories of both Heaven and Lingshan. This demon was the Single-Horn Rhinoceros King, who dwelt in the Golden Pocket Cave of Golden Pocket Mountain. He wielded a steel spear and wore a shimmering iron ring at his waist—the Diamond Ring. He was neither a primordial beast nor an ancient demon god; he was simply the Azure Bull that Taishang Laojun had ridden for countless millennia. A mere bull, having stolen a ring from its master and spent three years as a mountain king in the mortal realm, had driven the Great Sage Equal to Heaven, Sun Wukong, into one of the deepest desperations of his journey to the West.

The peculiarity of this battle did not lie in how powerful the Azure Bull Spirit was—though he was indeed formidable—but in the fact that the logic of the Diamond Ring completely dismantled every strategy Wukong relied upon for survival. Unable to win? Call for reinforcements. The reinforcements' weapons were seized? Call for more powerful reinforcements. The treasures of even more powerful reinforcements were also seized? Call again. And again, they were seized. Before Golden Pocket Mountain, Wukong summoned army after army, only to fail repeatedly. Each defeat was more hopeless than the last, for he discovered that the resources he could mobilize had scaled from the heights of Heaven to the peaks of Lingshan, yet Lingshan's Golden Elixir Sands were still snatched away by that single ring. When even Rulai's schemes failed, the battle shifted from "subduing a demon" to "breaking a deadlock"—and the final solution was not superior force, but an old man leading a rope to bring his own bull home.

The Azure Bull of Tusita Palace: Taishang Laojun's Closest Companion

The true form of the Single-Horn Rhinoceros King was an Azure Bull, the mount of Taishang Laojun. In Taoist mythology, the image of Laojun riding an Azure Bull through Hangu Pass is one of the most classic motifs—the legend of "Purple Qi Coming from the East" is tied to this bull. Laozi rode his bull westward, leaving behind the five thousand words of the Tao Te Ching, and then vanished into the depths of history. Journey to the West incorporates this legend directly into its narrative: Taishang Laojun's Azure Bull was no ordinary beast; having followed Laojun for untold ages, it had been steeped in the immortal qi of Tusita Palace daily and had long since cultivated itself into a spirit.

In Chapter 52, when Wukong discovers the demon's origin, Taishang Laojun's reaction is quite telling. He is first stunned, then rushes to investigate: "Upon hearing this, Laojun hurried to Tusita Palace to check, and indeed, the Azure Bull was gone, and the Diamond Ring was missing." Note the sequence—he first thought "the Azure Bull is gone," and only then realized "the Diamond Ring is also missing." This indicates that to Laojun, the Azure Bull was not merely a means of transport, but a companion with a degree of autonomy. Its departure was not a simple case of "livestock escaping," but was closer to the flight of a long-suppressed individual seizing the moment while the master was away.

The timing of the Azure Bull's descent to the mortal realm is also worth pondering. The original text mentions that it stole the Diamond Ring and slipped away while Laojun was "Transforming Barbarians into Buddhas." "Transforming Barbarians into Buddhas" is an extremely sensitive topic in Chinese religious history—Taoism claimed that after Laozi left Hangu Pass, he went to Tianzhu, manifested as the Buddha, and enlightened the barbarians. This claim sparked fierce debates between Buddhists and Taoists throughout history. Wu Cheng'en wrote this allusion into the story, ostensibly to explain why the Azure Bull had the opportunity to steal the treasure—the master was not home—but it subtly hints at a more complex thread: when Taishang Laojun went to "Transform Barbarians into Buddhas," he couldn't even keep track of his own mount. Was this mere carelessness, or was there something more?

After settling in Golden Pocket Mountain, the bull dubbed himself the "Single-Horn Rhinoceros King." The "Si" (rhinoceros) was an ancient one-horned divine beast recorded in the Classic of Mountains and Seas, possessing immense strength and a fierce temperament. By choosing this title, the Azure Bull signaled that its self-perception had shifted from "Laojun's mount" to an "independent demon king." It did not call itself the "Azure Bull King" or the "Escaped Bull of Tusita Palace"; it chose the name of an ancient divine beast—a complete reconstruction of its identity.

The Diamond Ring: The Ultimate Treasure for Seizing All Weapons

The Diamond Ring is the core of the Golden Pocket Mountain story arc and the most despair-inducing treasure in the entire system of Journey to the West.

Its function can be summed up in one word: snare. With a single toss into the air and a flash of golden light, whatever the opponent is holding is snatched away. Whether it is the Ruyi Jingu Bang, a demon-subduing pestle, a demon-slaying sword, or the Golden Elixir Sands of the Eighteen Arhats—as long as it is a tangible weapon or treasure, the Diamond Ring takes it all. It does not distinguish by rank, faction, or material; it recognizes only one principle: if you have something in your hand, I will snare it.

The horror of this ability lies in its indiscriminate nature. Other top-tier treasures in Journey to the West have conditions or limitations. The Purple-Gold Gourd requires the opponent to answer a call before it can capture them; the Banana Fan can only blow fire or wind; the Bag of Human Seeds can hold people but requires the opening to be aimed correctly. The Diamond Ring has no restrictions—it is the only treasure in the entire book that "works unconditionally." You do not need to chant a spell, you do not need the opponent's cooperation, and you do not need to satisfy any prerequisite; you simply throw it.

In Chapter 50, during Wukong's first encounter with the Azure Bull Spirit, the Ruyi Jingu Bang was seized by the Diamond Ring. This is the first (and only) time in the entire book that Wukong permanently loses his staff during a battle—not because it was knocked away or pinned down, but because it was snared by a ring and could not be retrieved. To Wukong, the staff was more than a weapon; it was the Pillar that Stabilizes the Seas from the East Sea Dragon Palace, the very foundation of his combat prowess established since his days at Flower-Fruit Mountain. A Wukong without his staff is like a general who has been disarmed—he still has the Seventy-Two Transformations and the Somersault Cloud, but his core tool for offensive output is gone.

More fatal still, every weapon Wukong later borrowed from Heaven was also seized by the Diamond Ring. This treasure is not picky—whatever weapon you bring, it takes. This directly destroyed Wukong's strategy of "bringing a more powerful weapon to fight again."

The origin of the Diamond Ring also warrants deep study. Which of Taishang Laojun's many treasures is it? In the original text, Laojun says: "That is my Diamond Ring, also known as the 'Diamond Snare.' Back when I passed through Hangu Pass to Transform Barbarians into Buddhas, I relied entirely upon this treasure." This sentence is packed with information: the Diamond Ring is not just a treasure, but the core tool used by Laojun during his "Transformation of Barbarians into Buddhas." If that act involved the relationship between the Buddhist and Taoist factions, then the Diamond Ring was, in a sense, the key chip determining the balance of power—whoever holds this ring possesses the ability to "disarm" any opponent.

Wukong's Repeated Failures in Summoning Aid: A Humiliation from Heaven to Lingshan

After his staff was seized, Wukong entered the longest cycle of "summoning reinforcements" on his journey. Each round of this cycle was more advanced than the last—the people summoned were more powerful, and the results more disastrous.

First round: Wukong summoned troops from Heaven. Li Jing, Pagoda-Bearing Heavenly King sent Nezha to lead the heavenly soldiers in the campaign. Nezha arrived at Golden Pocket Mountain aggressively, wielding six magical artifacts (the demon-slaying sword, demon-cutting knife, demon-binding rope, demon-subduing pestle, embroidery ball, and fire wheel). He didn't last a single round—the Diamond Ring was tossed into the air, and all six of Nezha's artifacts were snared. Left empty-handed, Nezha fled in disgrace. The first wave of the Heavenly regular army was completely disarmed, dealing zero damage.

Second round: Wukong summoned the Fire-Deity. Fire attacks are a standard method for dealing with demons. The Fire-Deity descended with the True Samadhi Fire, sending raging flames pouring toward the Golden Pocket Cave. The Azure Bull Spirit stood at the cave entrance, unperturbed; with one toss of the Diamond Ring, the fire was gone. The True Samadhi Fire is the same as the primordial fire of the Five Elements and possesses immense power, but before the Diamond Ring, it was no different from a candle flame. The Fire-Deity returned in defeat.

Third round: Since fire failed, he tried water. Wukong summoned the Water-Deity, who flooded Golden Pocket Mountain. As the towering waters surged toward the cave, the Azure Bull Spirit repeated the trick; one toss of the Diamond Ring, and the water was gone. The Water-Deity's water array met the exact same fate as the Fire-Deity's attack: all tangible forces were rendered useless before the Diamond Ring.

By this point, Wukong had exhausted all conventional means available to Heaven: military force (Nezha), fire attacks (Fire-Deity), and water attacks (Water-Deity)—all three paths ended in failure. The root of the problem was not that these deities were not strong enough, but that the Diamond Ring's logic of suppression was to "seize all tangible things"—no matter what attack method you used, as long as that method relied on a specific object (a weapon, a flame, a current), the Diamond Ring could take it. This was a "meta-level" suppression: it did not counter a specific mode of attack, but rather the very act of "using a tool to attack."

After three consecutive failures, Wukong fell into a true predicament. The military system of Heaven was completely ineffective against the Azure Bull Spirit. Next, he could only seek help from an even higher place—Lingshan.

The Golden Sands of the Eighteen Arhats Also Seized: The Failure of Rulai's Plan

Wukong flew to Lingshan to seek an audience with Rulai Buddha. Rulai's reaction was intriguing—he did not intervene personally, but instead dispatched the Eighteen Arhats to the mortal realm to assist in the battle, granting them a special treasure: the Golden Sands.

In the hierarchy of Buddhist treasures, the Golden Sands are exceedingly precious. The fact that Rulai sent the Eighteen Arhats with them indicates his belief that this treasure would be sufficient to suppress the Green Bull Spirit. Upon arriving at Jindou Mountain, the Eighteen Arhats deployed the Golden Sands array, transforming the sky full of yellow sand into a golden light that enveloped the Green Bull Spirit. This was Lingshan's "precision strike plan"—eschewing weapons in favor of a sand array.

However, the outcome was identical to every previous attempt. With a single toss of the Diamond Jade Bracelet, the Green Bull Spirit seized all the Golden Sands. The Eighteen Arhats were left standing there, utterly stunned.

The impact of this scene far exceeds the three preceding failures. When the fire of the Fire Virtue Star Lord was seized, a reader might say, "The fire wasn't powerful enough"; when the water of the Water Virtue Star Lord was taken, one could argue "water wasn't the right counter"; when Nezha's six magical artifacts were captured, it could be dismissed as "Nezha's rank being too low." But the Golden Sands of the Eighteen Arhats were the specific counter-measure chosen by Rulai himself. Rulai had assessed the Green Bull Spirit's situation, made a professional judgment, and selected the treasure he believed would win—yet it was still snatched away by the Diamond Jade Bracelet. This meant that even Rulai's judgment had failed.

When even Rulai Buddha's plan proved useless, Wukong was no longer facing a problem of being "outmatched," but a problem that was "unsolvable." The Heavenly Palace had tried, Lingshan had tried; weapons failed, fire attacks failed, water attacks failed, and the Golden Sands failed. The Diamond Jade Bracelet acted like a black hole, devouring everything thrown its way.

This was the moment the "summoning reinforcements" trope was completely shattered. In other battles, the reinforcements Wukong brought could at least fight to a draw or identify the demon's weakness. But at Jindou Mountain, each new wave of rescuers merely provided more "food" for the Diamond Jade Bracelet. Every time Wukong requested aid, the Green Bull Spirit's "armory" grew—he piled every seized weapon and treasure in his cave, from the Ruyi Jingu Bang to the Fire Wheel and the Golden Sands; he had everything. Wukong was effectively helping the demon expand his military hardware.

Following the failure of the Golden Sands, Rulai provided Wukong with a crucial piece of information: "This monster's origins are extraordinary; go to the Tusita Palace and ask Taishang Laojun." This sentence is one of the most subtle "passing of the buck" in the entire book. Rulai's meaning was clear: this is not a problem for my Lingshan; this is your own Daoist bull that has run away. This shifted the narrative from "subduing a demon" to "assigning accountability": Whose bull is it? Whose leash is it? Who is responsible?

Taishang Laojun's "Transforming Barbarians into Buddhists": A Secret War Sparked by a Single Phrase

The phrase "Transforming Barbarians into Buddhists" is the most politically charged piece of foreshadowing in the entire Jindou Mountain story arc.

When Wukong arrived at the Tusita Palace to question Taishang Laojun, the Old Lord revealed the origin of the Diamond Jade Bracelet: "Years ago, when crossing the Hangu Pass to transform barbarians into Buddhists, I relied entirely upon this treasure." In the original text, this is mentioned only in passing, but within the context of Chinese religious history, the implication is explosive.

The core claim of "Transforming Barbarians into Buddhists" is that Buddhism is not a foreign religion, but was founded by Laozi himself after he traveled west to Tianzhu—that the Buddha is actually an incarnation of Laozi. This theory first appeared during the Eastern Han dynasty and evolved during the Northern and Southern dynasties into a protracted great debate between Buddhism and Daoism, with both sides writing treatises and attacking one another, eventually prompting the Emperor to issue a ruling. Historically, this dispute ended in a victory for Buddhism; during the Zhiyuan era of the Yuan dynasty, Kublai Khan ordered the burning of the Huahua Jing (Sutra of Transforming Barbarians), officially rejecting the "Transforming Barbarians into Buddhists" theory.

Wu Cheng'en did not include this sensitive topic in Journey to the West—and have Taishang Laojun say it personally—by accident. Within the narrative framework of the novel, by saying "transforming barbarians into Buddhists, I relied entirely upon this treasure," Laojun is publicly declaring to both the Buddhist and Daoist camps that the founding of Buddhism was linked to his Diamond Jade Bracelet. If the Lingshan side heard this, it would be a blatant provocation.

Even more subtle is the fact that after the failure of the Diamond Jade Bracelet, Rulai told Wukong, "Go ask Taishang Laojun"—he showed neither anger nor did he refute the "Transforming Barbarians into Buddhists" claim. This silence is profoundly meaningful. Rulai's attitude can be interpreted in two ways: either he considers such "Daoist propaganda" beneath him, or he is acutely aware of the true origin and power of the Diamond Jade Bracelet and knows he truly cannot overcome it—because the creator of the bracelet is Taishang Laojun, the head of the Three Pure Ones, and its "technical tier" is indeed superior to the equipment of Lingshan.

From a narrative perspective, the battle at Jindou Mountain exposes a truth that the book otherwise carefully avoids: on the pilgrimage, the Buddhist and Daoist camps appear to be in a cooperative relationship (Daoist immortals help fight demons, while Buddhist Bodhisattvas provide protection), but beneath the surface lies an irreconcilable power tension over "who is the boss." The moment the Diamond Jade Bracelet seized the Golden Sands, this tension surfaced—the highest-tier treasure of the Daoists could indiscriminately suppress the highest-tier treasure of the Buddhists. This was not a victory for the Green Bull Spirit, but a crushing of the "Buddhist technical system" by the "Daoist technical system" represented by the Diamond Jade Bracelet.

Leading Back by the Nose: The Standard Ending for Mount-Type Demons

When Taishang Laojun arrived at Jindou Mountain, his method of subduing the Green Bull Spirit was exceedingly simple: first, he used the Plantain Fan to conjure a blast of True Samadhi Fire, forcing the Green Bull Spirit to reveal its original form—a giant green bull. Then, Laojun stepped forward, threaded a rope through the iron ring in the bull's nose, and simply led it away.

There was no battle. No magical duel. No war of words. It was simply an old man leading his lost bull home.

The anti-climax of this ending is stark. Before this, how many reinforcements had Wukong summoned? Nezha came, the Fire Virtue Star Lord came, the Water Virtue Star Lord came, and the Eighteen Arhats came. The gods and buddhas of the heavens descended in droves; fire, water, and sand attacks were deployed in succession, all failing. The entire military system of the three realms was powerless against this bull. Then Laojun arrived—without soldiers, without generals, and without even any extra treasures—carrying only a Plantain Fan and a rope. The fan forced the bull to reveal its form, and the rope led it back by the nose. It was like a farmer recovering a stray ox.

This ending precisely reveals the essential characteristic of "mount-type demons" in Journey to the West: their combat power does not come from themselves, but from stolen treasures. Without the Diamond Jade Bracelet, the Green Bull Spirit is merely a strong bull—its martial arts are not poor, but they are far from enough to paralyze the three realms. The Diamond Jade Bracelet is the true threat. Ultimately, a treasure belongs to its master, and when the master arrives, it must be reclaimed. Thus, the key to subduing the Green Bull Spirit was not to "defeat it," but to "find its owner."

This pattern recurs throughout Journey to the West. King Golden Horn and King Silver Horn stole Laojun's Purple-Gold Gourd and Mutton-Fat Jade Vase, and eventually, Laojun came to reclaim them; the Yellow Brow Demon King stole Maitreya Buddha's Bag of Human Seeds and Golden Cymbals, and eventually, Maitreya came to reclaim them. The Green Bull Spirit stole Laojun's Diamond Jade Bracelet, so naturally, Laojun came to take it back. Ownership of the treasure determines the outcome—no matter how much destruction a demon causes with a stolen treasure, everything returns to zero the moment the owner arrives.

But the fate of the Green Bull Spirit carries an extra layer of meaning compared to other mount-type demons. Laojun's act of threading the nose and leading the bull is not just "reclaiming a mount," but a symbol of domestication. The iron ring in a bull's nose is the mark of human domestication—wild bulls have no nose rings; only bulls that have been tamed for labor are pierced. By putting the ring back in the Green Bull's nose, Laojun re-confirmed a broken order: you are the beast, and I am the master; you escaped and spent three years as a Great King, enjoying freedom and power, but there was always a ring in your nose waiting for a rope to pass through.

Watching this scene from the side, Wukong's mood must have been incredibly complex. He too had been "subdued"—the golden headband on his head and the iron ring in the bull's nose are essentially the same thing. The only difference is that Wukong wore his "voluntarily" (though he was deceived), while the Green Bull was forced back into his. Whether voluntary or forced, the function of the headband and the nose ring is identical: to keep you acting within a designated range, and to pull you back with a rope the moment you cross the line.

As Laojun led the Green Bull back to the Tusita Palace, he took the Diamond Jade Bracelet with him. The Ruyi Jingu Bang and other seized weapons and treasures were also returned to their original owners. The storm subsided. Jindou Mountain returned to being an ordinary mountain, and the Jindou Cave became empty, without a single trace of a minor demon remaining.

Does this bull, in the Tusita Palace, still remember being the "Single-Horn Rhinoceros King" for three years? The book does not say. But that nose ring will always be there, reminding it—and the reader—that in the world of Journey to the West, freedom has a price, and for a mount, that price is the hole in its nose.

Related Characters

• Taishang Laojun: The master of the Green Bull Spirit, the foremost of the Three Pure Ones, and the creator of the Diamond Jade Bracelet. He personally descended to the mortal realm to retrieve his mount using the nose-piercing method, making him the only person capable of resolving the deadlock at Jindou Mountain.
• Sun Wukong: During the battle of Jindou Mountain, he suffered the most frequent failures in summoning reinforcements throughout the entire pilgrimage. After his Ruyi Jingu Bang was snatched away by the Diamond Jade Bracelet, he was left empty-handed, searching from the Heavenly Palace to Lingshan before finally uncovering the demon's origins.
• Rulai Buddha: He dispatched the Eighteen Arhats with the Golden Cinnabar Sand to assist in the fight, but the sand was likewise seized by the Diamond Jade Bracelet. After this plan failed, he guided Wukong to the Tusita Palace to investigate.
• Nezha: Acting on the orders of the Pagoda-Bearing Heavenly King, he led the heavenly soldiers to suppress the Green Bull Spirit. All six of his magical treasures were snatched by the Diamond Jade Bracelet, and he returned empty-handed.
• Tang Sanzang: At Jindou Mountain, he was captured by the Green Bull Spirit and taken into the cave. He was imprisoned alongside Zhu Bajie and Sha Wujing, awaiting Wukong's arrival with reinforcements to rescue them.