According to personal library network, Guiguzi's real name is Wang Xu, also known as Wang Chan, who was born in the Spring and Autumn Period. Legends full of mystery in history often go to Yunmeng Mountain to collect herbs and cultivate monasteries. Because he lives in seclusion in Qingxi Ghost Valley, he calls himself Mr. Ghost Valley. He was a famous thinker, strategist, strategist and educator during the Spring and Autumn Period and the Warring States Period. He is the originator of strategists, a mysterious figure in the history of China, and has been called a strange man since ancient times. Disciples include military strategists Sun Bin and Pang Juan, strategists Su Qin and Zhang Yi.