私雨難滅 The Private Rain Fails
那雨淙淙大小，莫能止息那妖精的火勢。原來龍王私雨，只好潑得凡火，妖精的三昧真火如何潑得？好一似火上澆油，越潑越灼。那雨淙淙大小，莫能止息那妖精的火势。原来龙王私雨，只好泼得凡火，妖精的三昧真火如何泼得？好一似火上浇油，越泼越灼。
逐句解 Line by line
For all its gurgling flood, the rain could not quell the fury of the demon's fire.
One sentence to undo the entire plan. All that water, and the fire does not so much as flicker. 淙淙 cóng cóng is the sound of water running -- after the grandeur of the last passage, the rain is suddenly just a noise.
The truth was, the Dragon King's private rain could only douse mortal fire; how could it douse the demon's samādhi true-fire?
Now the explanation, and it has two halves. First, 私雨 -- private rain. This is rain the dragons brought on their own initiative, without the Jade Emperor's decree, and the narrator uses the word pointedly. All that paperwork the dragon king described four passages ago was not merely bureaucratic obstruction; sanctioned rain is a different thing from unsanctioned rain. Second, and worse: this is the 三昧真火, and ordinary water was never going to touch it. The set-piece said so. Nobody listened.
It was just like pouring oil on flames — the more it was doused, the fiercer it blazed.
火上澆油, pouring oil on a fire, is a set phrase still in daily use, and the line applies it with awful literalness -- the more they douse it, the harder it burns. The remedy is feeding the disease.
This is the hinge of the chapter, and it works retroactively. Everything the fire set-piece said now reads differently. It was not boasting about the fire's power; it was specifying what kind of thing the fire is. Not drilled from wood, not raised under a crucible, not lightning, not a wildfire -- so not, in the relevant sense, ordinary fire at all. The doctrine that water conquers fire is perfectly sound and simply does not apply here.
The narrator adds a second twist with one word: 私雨, private rain. The dragons acted without the Jade Emperor's decree, so what they poured was unsanctioned water. That vindicates the dragon king's tedious speech about permissions, which looked like pure comedy at the time. The forms existed for a reason.
And the result is worse than useless. The water feeds the fire like oil. Wukong's entire diplomatic errand -- the ocean, the four kings, the muster of the sea-host, the Milky Way pulled down out of the sky -- has made the situation actively worse. The answer to this fire is not an element, and it will not arrive until the next chapter.