That Tomb in Tianxu Can Breathe

The white jade capital in the sky has five cities on the twelfth floor. Immortals caress my head, knotting my hair and receiving immortality. The textbook says that this is nonsense written by Li Bai when he was drunk. I have been a believer for more than 20 years. Qin Shihuang has been looking for the longevity medicine all his life, but it is fake. But the thing he didn't find was real. For two thousand years, everyone thought they were seeking immortality, but they were actually looking for—— (The rest, the book says.)