Is Zeng Zhong, Guiguzi's professional fortune teller, a liar?

Guiguzi was born in the 4th century BC and was a teacher of Zhang Yi, Su Qin, Sun Bin and Pang Juan. At that time, there was no fortune-telling, only six benevolent people of Zhouyi divination and Daoism, and Taiyi Shenshu just appeared at that time, and Fang Jing invented the predecessor of six hexagrams in the Western Han Dynasty. At this time, Yi Mathematics School appeared in Zhouyi. There are scattered records in physiognomy books. In the early years of the Tang Dynasty, Yuan Tiangang calculated the good and bad luck of a person's life according to his date of birth. It was not until Ziping, a Vae in the Five Dynasties, invented the time column that they said today's four-column numerology and Ziping numerology. I have never heard of Zeng Zhong, but I dare not say that he can tell fortune or that he is a liar.