Because it has a wide user base, low threshold, easy channel promotion, and can make money.

The principle and idea of ​​selling textbooks on Douyin is very simple, which is to help textbook merchants promote. When posting videos, use Douyin's e-commerce function to insert textbook links, and you can get a share of the merchant's commission when someone makes a purchase. In order to promote their products or create hot products, merchants generally give very high commissions. Helping merchants sell a textbook or a set of textbooks will at least get a commission of more than ten or even dozens of yuan.