Proverbs of rain on the first day of stay

Proverbs that it rained on the first day of lodging include "rain on the head, rain on the squat" and "it's all rain in the pond on rainy days, and corn and sorghum crash".

In some places in ancient China, the year, month and day were often recorded by the method of "stem and branch", that is, "ten-day stem" matched with "twelve-day branch", so a "Geng Day" appeared every 10 day. Three volts can be divided into initial, intermediate and final volts, and its date is determined by the date of solar terms and the date of the main branch year.

The dog days are the hottest, humid and sultry time of the year. The reason for the high humidity in dog days is that the southeast wind blows in dog days, and the Pacific Ocean and Indian Ocean are in the southeast direction. The air is humid, and the humidity of the wind causes the high humidity in the dog days. In dog days, "high temperature and high humidity" is the climate characteristic of southern China.