What do Kun Zao and Ren Geng Geng Bing mean?

Kun Zao, Ren Xu Geng Bing (Japanese pubic hair) is a woman's birthday. According to relevant data, Kunzao is the name of a birthday, a woman, and Ganzao is the name of a birthday, a man. Ancient fortune tellers divided the arrangement of eight characters into different patterns, good and bad.