Why does Tomb-Sweeping Day eat green food?

Legend has it that one year in Tomb-Sweeping Day, Taiping Chen, the right-hand general of Li Xiucheng of the Taiping Heavenly Kingdom, was chased by Qing soldiers, and a nearby farmer stepped forward to help, disguised Taiping Chen as a farmer and cultivated land with him. Taiping Chen was not caught, and the Qing soldiers didn't stop there, so they sent more soldiers to set up posts in the village, and everyone who left the village had to be inspected to prevent them from bringing food to Taiping Chen. When he got home, the farmer slipped on a clump of wormwood and was thinking about what to bring to Taiping Chen. When he got up, he saw that his hands and knees were stained with green. He immediately took care of it, quickly picked some wormwood and went home, washed it, boiled it, squeezed it into glutinous rice flour and made it into zongzi. Then put the green jiaozi in the grass and mix with the sentry at the village entrance. Taiping Chen ate this green ball and felt fragrant, waxy and non-sticky. After dark, he bypassed the Qing army post and returned to the base camp safely. Later, Li Xiucheng ordered the Taiping Army to learn to be a youth league to defend itself against the enemy. The custom of eating dumplings spread.

Its scientific name is mouse bow grass, and some are also called mouse bow grass and mouse bow grass. It's all the same sound, but the word "bow" is written differently. Chrysanthemum morifolium, commonly known as Qingming grass, is also known as Foer grass, Qingming cuisine, cold food, cotton cuisine, rice cuisine, shepherd's purse, ground cuisine and vanilla niang. The whole plant has white hair, lobules such as chrysanthemum leaves, small flocculent yellow flowers, annual vegetation, and white capillary leaves grow in Qingming period. Has the effects of resolving phlegm, relieving cough, lowering blood pressure and expelling wind. There is a record in Compendium of Materia Medica: "Qu means that its flowers are yellow and can also be eaten with rice noodles. A mouse's ear is said to have the shape of a leaf like a mouse's body. It has white fur as thin as jade. This kind of grass is spread all over China, and ancestors have always recorded picking its seedlings to eat or adding rice flour to make cakes.

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