2, the plot synopsis: Hu Bayi (Jin Dong) went to the countryside to the Sino-Mongolian border of Ganggang Yingzi, bringing with him the only remaining book at home - "sixteen characters of yin and yang feng shui secret art", and idly memorizing the text of the book. Afterwards, he joined the army in Tibet, met an avalanche and fell into a huge ditch, Hu Bayi used his own knowledge of the secret art of burial to escape from death. After demobilization, Hu Bayi and his friend Wang Fatzi (Zhao Da) joined an archaeological team to Xinjiang. The group traveled to the ancient city of Jingjie in the Taklamakan Desert and entered the underground "ghost cave". The mysterious cave seems to be under the control of a prophet.