Grain Rain, known as "Guyu" in Chinese, marks the final solar term of spring, indicating the arrival of abundant rainfall vital for the growth of crops.

There is an old custom in Anhui that people drink tea on the day of Grain Rain. Spring tea during Grain Rain is rich in vitamins and amino acids, which can help to remove inflammation from the body and is good for the eyes.

It is also said that drinking tea on this day would prevent bad luck.