Hello! What does fleeting ugliness mean? What year and month was this ugly boy born? Thank you.

Nonyl and decyl are the second part of ten-day work; Hai, Zi and Chou are three of the twelve branches, corresponding to the three genera of pig, mouse and cow respectively. The fleeting time is our specific year, which refers to the year when we meet pigs, rats and cows, and the year when the sky is dry and there is water.

Through the perpetual calendar, you can query heavenly stems and earthly branches every year, and you will know which year has the characteristics he said.

Ten heavenly stems and twelve earthly branches are the basis of eight characters, just like Chinese characters in Chinese and words in English. This can't be explained, it needs to be written down.