What do the words crab, fat, chrysanthemum and yellow mean in autumn?

The reason why chrysanthemum crabs are fat is that when chrysanthemums are in full bloom, crabs are the fattest and most delicious. That season is usually around September and October of the lunar calendar.

Definition of words:

1, Korea's "On Salt and Iron": "Words are better than Tang Yu, and their meaning is higher than autumn. There are gorgeous words, but I didn't actually see them. " Yu Xin's Xiao Yuan Fu in the Northern Zhou Dynasty: "It's not terrible in summer, but sad in autumn." Qianyi? The word "Bodhisattva Man" says: "The long cloud coincides with autumn white, and I sit by the window alone to peep at the smoke."

2. Tang Zhangwei's poem "Nine Days": "Lin Qiu doesn't know spring, so it's easy to travel." Hu Shi's Trial Collection on the 24th Night of November: "Now they say that I am getting better soon, and the beautiful autumn has long passed."

As can be seen from the date distribution map of beginning of autumn in China, Northeast China is the earliest place in beginning of autumn in eastern China. In autumn, the cold air in the north is constantly invading, but its power is not very strong. Autumn weather often forms in northern China, and continuous autumn rain often appears in West China.