What does it mean to enter Mei today? How to understand it?

2, also known as "into the mold" and "into the plum". Refers to the day when the rainy season begins. Meteorological Meiyu refers to a rainy weather that transits from early summer to midsummer. Enter the meiyu period. Different climate seasons and plum blossom periods vary from place to place. We can't rely on the plum blossoms on the calendar to guide production and life, but to listen to the plum rain forecast released by the meteorological observatory.

3. Quote: Wen Wei Po 1984.5.2 1: "Therefore, production and life can't be guided by the entry and exit of plum blossoms on the calendar, but we should listen to the plum rain forecast released by the Meteorological Observatory."