Pangu appears in Jackie at the threshold of the Council's underground hall. The corridor that descends from the apricot tree in Eduardo's yard down into the dining-hall scene of Chapter 6 passes a set of pillars that Lan Caihe tells Jackie are "Pangu's ribs — not metaphorically, the ones the building was sited around when the Bureau dug here in 1906." Jackie laughs. Lan Caihe does not laugh. The ribs are presented as load-bearing in both senses: the corridor uses them as columns, and the cosmology uses them as the reason there is a corridor at all.
The figure is named again in Chapter 12, in the conversation between Jackie and Lucy at their corner table over the Celestial Bell. Lucy, who has been folding lanterns with Eduardo for three years, knows the Pangu story already. "He held them apart with his body," she says. "That's the whole job." The line floats. Two chapters later, when Jackie has to hold the methodology away from Anna with his own body in the daycare basement, the reader knows what shape that holding is.
The Pangu myth is not as old as it feels. The earliest written account is in the Sanwu Liji (三五歷紀) of Xu Zheng, a 3rd-century-CE text from the Three Kingdoms period — late, by the standards of Chinese mythology. Some scholars argue Pangu was a southern or southwestern import, possibly Miao or Yao in origin, absorbed into Han mythography during a period when China was looking for a creator-figure to match the cosmologies it was encountering through Buddhism. Whatever his origins, by the Tang dynasty he was canonical: the figure every Chinese cosmography started with, even when his name was barely older than the empire that adopted him.
His body-becomes-world death is the part that matters for the Chronicles. The structural claim — that the geography you live in is made of a being who chose to stop being a being so the world could exist — is the deep template behind every Nezha-style self-dismemberment in the Chinese tradition. The lotus rebirth is a Pangu rebirth scaled to a child.
The egg and the standing. Creation in this tradition is not fiat but posture — Pangu makes the world by holding two things apart. The Chronicles read every act of separation (privacy from surveillance, voice from Halo, child from methodology) as a Pangu gesture.
Body becomes world. When Pangu dies, his parts redistribute into geography. The Chronicles' theory of place — Palo Alto kitchen, Lincoln Memorial, Friendship Archway — is downstream of the idea that landscape is somebody else's body.
Eighteen thousand years. The duration of his standing is the universe's first case study in wuwei — non-action that is also the hardest possible action.
The ribs in the corridor. Lan Caihe's claim in Ch6 that the Council's hall is sited around Pangu's actual ribs is meant literally inside the universe. The geology of the Chronicles is mythological geology.