Ch13 of Jackie — Gong-Gong rises — is the chapter where the water in the city stops behaving. The fountain at Lotta's, the koi pond at the back of the Golden Phoenix, the bay itself: each of them registers, for a few minutes, a pressure that is not weather. Lü Dongbin is the one who names it. The book does not pretend the god has come up out of the sea wearing a face. It is more disquieting than that: Gong Gong as the chapter's titular force is a leaning, a tilt-of-the-room, the felt sense that something ancient is shouldering the floor of San Francisco and finding it thinner than it remembers.
The chapter is structurally the moment the book's villains overplay their hand. The methodology has been quietly tipping a scale; Ch13 is the scale registering it. Gong Gong's gift to the story is the recognition that you can break the world by losing one argument too completely — that a grievance can become a cosmology, and the sky can come away from the corner it was nailed to. The Council of Eight Immortals, watching the bay, are watching for a face they have seen before.
Gong Gong appears in the Huainanzi (139 BCE), the Liezi, and the Shiji, with variants stretching back through Warring-States cosmology. He is described as a dragon-headed deity with red hair and the body of a serpent, ruler of the floods. The story varies: he fights Zhurong in some versions, the legendary emperor Zhuanxu in others, the rebel leader Shennong in still others — but in every version he loses, and in every version the loss ends with his head against Mount Buzhou and the sky tilted. The narrative is one of the foundational "why" myths of Chinese cosmography: it is why the sun and moon move from east to west across a tilted heaven, and why all the rivers of China flow east toward the lower edge of the broken earth.
The figure of Nüwa repairing the heavens with smelted five-colored stones, often paired in the same telling, is the counterweight: the cosmos can be patched but never quite straightened. The sky stays tilted. The tilt is what we live in.
The original cosmological tantrum. Gong Gong is the figure who lost an argument and broke the sky to register the loss. He is, in this universe, what unprocessed grievance scaled up to divinity looks like.
Mount Buzhou. The pillar of heaven he cracked is the same mountain whose name surfaces in Ch13. Buzhou ("the incomplete") is itself a name for what loss does to a structure.
The tilt we live in. Nüwa patches the heavens, but the heavens stay tilted. The Chronicles inherit this premise: the world the kids are saving was already broken before they got here.