Eat traditional foods in the long summer: eggs, long summer tea, long summer soup, military vegetables, wheat silkworm, foot bone bamboo shoots, Qijia porridge, long summer rice and so on.

Healthy food in the long summer solar term: duck eggs, lettuce, poria cocos, wheat, bitter gourd, pig heart, lotus seeds, mung beans, millet, lotus roots and so on.

Black rice was originally a folk festival food in China, which had existed in the Tang Dynasty. In Jiangsu and Anhui, it has become a custom for many people to cook black rice with the leaves of Vaccinium bracteatum.

The eighth day of the fourth lunar month is the traditional Nirvana Festival in China. According to folklore, in order to get food, Mulian, a disciple of Sakyamuni, tried to dye rice with the juice of southern candle leaves and cook it into black rice to send. Hungry ghosts dare not eat it. Mother is finally full, and the people eat black rice every year to commemorate Manglietia's dutiful son. According to the new edition of Compendium of Materia Medica, candle leaves are the leaves of Vaccinium bracteatum, an Ericaceae plant.

Steaming rice with broad beans at ordinary times will not only make the taste of rice more attractive, but also promote the absorption of trace element calcium by human body. Rice and broad beans are rich in trace element calcium, and broad beans also contain some nutrients to promote calcium absorption, which can effectively improve the absorption and utilization rate of calcium, promote bone development and improve bone density.