Manzhong is one of the twenty-four solar terms, falling around June 6 (5th-7th). On that day, the sun reaches 75 degrees longitude. The word "awnzhong" means that in the Yellow River Basin, the rice has grown into "seeds" at this time, and fine awns have grown on the kernels of the rice. Miscanthus is also the dividing point of crop planting time.

By this time, the plum rain season in southern China is coming to an end and has turned into afternoon thundershowers. The weather will gradually turn hot and dry, causing the growth and survival rates of crops that are not suitable for summer planting to decrease. The middle and lower reaches of the Yangtze River and southern Japan enter the rainy season at this time. The sun also shines directly on Macau on the day of Mangzhong.

Extended information:

In the awning season, it is rainy along the Yangtze River, and the Huanghuai Plain has also begun to enter the rainy season. If there are rainy weather, strong winds, and hail that last for many days before and after awning, it is often rainy. Wheat cannot be harvested in time, resulting in agricultural losses.

After Ear Grain, the middle and lower reaches of the Yangtze River enter the plum rain season, with fewer sunshine hours, increased rainfall, and occasional low temperatures. As for South China, it enters the season with the most precipitation of the year.

Southwestern China has also entered a rainy season around the Ear Grain season, and plateau hail in the western part of the region has gradually increased. The hottest day in the Nenjiang River Basin in Northeast China during the 30 years from 1971 to 2000 also occurred during the Mangzhong period, reaching a high of 37.1°C.

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