How to calculate the entry and exit of plum blossoms?

The season of plum is calculated according to the date of the main branch. The first day to enter the plum tree is the third day from the planting of awn, and the first day to leave the plum tree is the last day from the hot summer.

Traditionally, in China, the determination of plum entry and plum exit is based on the combination of solar terms and branches. According to the calendar, the first third day after mango seeds is plum blossom, and the first last day in Xia Hou is plum blossom. If the weather on the day of canopy is C, it is designated as entering plum blossom, and if the ground branches on the day of light summer are not, it is designated as leaving plum blossom.

Plum entry and plum exit, also known as mold entry and mold exit. The rainy weather in the yellow ripe season of plums is referred to as "Huang Meiyu" or "Meiyu" for short, and clothes are prone to mildew. Plum entering and plum leaving refer to the beginning and end of rainy season respectively.