Cowpea is native to India and Burma, China's Song "Guangyun" has the word "cowpea", "Tu Jing Ben Cao" also has cowpea records, it can be seen that the Song Dynasty has been cultivated. There are three types of cowpea: long cowpea, common cowpea and rice cowpea. Why is it called "cowpea"? Li Shizhen (李时珍)'s Ben Cao (本草), said that because "the red color of this bean is predominant," it was once called "?" The right side of the character is "豇豆". The right side of the character is "绛", which means both sound and meaning (绛, dark red). Later, the character is often used as "cowpea". Thus, the name "cowpea" is derived from the red color of the bean grains, "绛"(深红色)? Cowpea. I'm from Shanxi, and we call it "bean horn" here ......