1, resolving phlegm to relieve asthma or purging lung to relieve asthma, purging lung mainly means purging phlegm and water, which is mainly used to treat heat syndrome such as excessive phlegm and water, phlegm in throat, edema in chest and abdomen and facial edema.

2, prickly heat, the name of Chinese medicine. It is the seed of Lepidium, Lepidium and Descurainia sophia. Cruciferae plants. Plant calli are distributed in north temperate regions such as Northeast China, North China, Jiangsu and Zhejiang in East China, Sichuan and Tibet in Northwest China and Southwest China. Viburnum plants are distributed in Shandong, Henan, Anhui, Jiangsu, Zhejiang, Fujian, Hubei, Jiangxi, Guangxi and Europe. Descendants are distributed all over the country except South China, and also in Asia, Europe, Africa and North America.