Thread pepper. According to the query on Huinong.com, the surface of line pepper has irregular concave and convex lines after maturity, and the skin shrinks after drying. It is called "wrinkled pepper" and has a spicy taste. Hangjiao fruit is light green when immature and mature when mature. It is red in color, with a fruit length of 13 cm and a transverse diameter of 1.4 cm. A single fruit weighs 10 grams and has a slightly spicy taste.