Qiufen (秋分) reflects the changing of seasons, indicating that autumn is halfway over. On the day of Qiufen, the sun rays fall directly on the equator, and the lengths of day and night are equal again, the same as on the day of Chunfen. After this day, the sun is moving from the equator to the southern hemisphere, when day becomes shorter and night longer.
In south China, the temperature drops below 22℃ (71.6°F), and cool autumn begins. As an old saying goes, "It becomes cooler each time after an autumn rain." However, the weather is totally different in the northern part of the northwest plateau where the lowest day temperature could be below 0℃ (32°F) – a winter scene with snows.
After Qiufen, in most areas of south China there are fewer rainstorms. Sometimes there are heavy rains but more often it just drizzles. So farmers have to get in the harvest in good time, and it is also an ideal season for tree planting with a higher survival rate.
Historically, the Chinese diet pays more attention to balance, meaning that the diet is based mainly on vegetables with some meat. Diversified foods and a balance of vegetables and meats are very important during this season when the outside celestial is also balanced. Too much or too little of greasy or high nutritious food is actually no good to health.