If the house is not built in the afternoon, the owner will change it: if the roof is not built in the afternoon, the house will become someone else's.

These two sentences are the contents of Peng Zu's "100 taboos", which is a health manual in ancient heavenly stems and earthly branches that something will happen on a certain day or at a certain time if you don't do it. Don't do things in heavenly stems and earthly branches on a certain day or at a certain time, or something will happen.

Extended data:

There is no objection to the legends that Peng Zu was good at keeping in good health. It can be inferred that because Peng Zu is good at keeping in good health, and there are many longevity people in his family, he is famous all over the world, so the legend of Peng Zu's 800-year-old life gradually came into being and spread to future generations. Therefore, Peng Zu, a clan, was a very representative and famous longevity family in ancient times.

Geng Keng is the ancestor of Peng, Qian and Webster, and the ancestor of Zhu Rongba's surname Zhongpeng. Later, the bald surname was separated from the Peng surname and formed the Zhou surname. Today people call it "Peng Zu", that is, the ancestor of Da Peng State. Because of the establishment of the Great Pengguo in Pengcheng, he was honored as Peng Zu by later generations.