Betel nut, also known as Binmen, Binnan, Dabaipin, Renpin, Renlang, Ximidan, Xianmidan, and snail fruit, is a palm plant, etc., and belongs to the same family as palm (zōng) palm like coconut. (lǘ) Family of evergreen trees, with a trunk that can grow up to twenty meters long and a straight trunk.

Betel nut fruit contains concentrated tannins (proanthocyanidins), which have not yet been proven to have anti-aging "free radical" effects. Chewing the fruit is slightly addictive, and the extract has been proven to have anti-depressant properties. Effect. After eating betel nut, the face will turn red, as if drunk. Su Dongpo wrote poems such as "The red tide on the cheeks makes you more charming, but who knows that you are drunk with betel nut" and "The red tide on the cheeks is drunk with betel nut". Arecoline has been used to treat parasites but is carcinogenic (oral cancer).

Betel nut has been a good fruit for residents of the southeastern coastal provinces of China since ancient times to welcome guests and entertain relatives and friends. In ancient times, distinguished guests were respectfully called "Bin" and "Lang", and the reputation of "Betel nut" came from this. . In many parts of Asia, such as Taiwan, India, Hainan, Hunan and other places, the habit of chewing betel nut is retained.