Grain Rain is related to the solar terms between the vernal equinox.

1, including solar terms: beginning of spring, Spring Rain, Sting, Equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Xiaoshu and Dashu.

2. Twenty-four solar term song full version should be: Spring rains startle spring and clear valleys, and summer is full of summer. Autumn dew, autumn frost, little snow in winter and cold in winter. The first half of the year is June 2 1 day, and the second half is August 23. The two festivals remain unchanged every month, with a maximum difference of one or two days.

3. Solar terms refer to the 24 solar terms and climate, which is a supplementary calendar formulated by China in ancient times to guide farming, and is the crystallization of the long-term experience and wisdom of the working people of the Chinese nation. Twenty-four solar terms reflect the apparent movement of the sun in one year, so the dates of solar terms are basically fixed in the current Gregorian calendar, with the first half of the year being 6 days and 2 1, and the second half being 8 days and 23 days, with a difference of 1 ~ 2 days.