Hu Bayi once went to the countryside to the camp on the border between China and Mongolia, and memorized a sixteen-character book on the secret art of yin and yang feng shui in his spare time. Later, he joined the army and went to Tibet, where he escaped in an avalanche using his knowledge of the tomb. After demobilization, Hu Bayi and his friend Wang Fatzi joined an archaeological team and went to Xinjiang for an expedition. They eventually arrived at the ruins of an exquisite ancient city in the Taklamakan Desert and entered an underground passage called the "Ghost Cave". The cave was full of traps and traps, as if it had been manipulated by a prophet.