From Baidu:

Guiguzi, surnamed Wang, name 诩 (xǔ) (or li), also known as Wang Chan, Wang Tong, and Xuanweizi; One said that his name was also called, Liu Wuzi, Huaxia nationality, and one said that he was a native of the Spring and Autumn Period and the Warring States Period (now Qi County, Hebi City, Henan Province); One is that he was a native of Wei during the Warring States Period (Guzi Village, Xiangcaiying Township, Linzhang County, Handan City, Hebei Province).

Guiguzi is the originator of the Zongheng family, and Su Qin and Zhang Yi are its two most outstanding disciples.

There are a total of fourteen articles in "Guiguzi", and the last two most important ones are now lost, namely: "Guiguzi" turns pills thirteenth, and "Guiguzi" is chaotic fourteenth.