1. Wheat starch. According to the weather network query: Chengmian is wheat starch. Chengfen, also known as Chengmian, Tingfen and wheat starch, is a gluten-free flour composed of wheat.

2. Cornstarch. There are cornstarch substitutes for Chengmian. Cornstarch is starch, usually corn starch. The powder of cornstarch is relatively fine, the color is white and shiny, and its main function is to increase the tender taste and viscosity of food. The properties of wheat starch and corn starch are relatively similar. They are both cereal starches, so they can be substituted for each other.