African sign raising refers to African children holding signs with written words for filming, which is an advertising innovation and a public welfare project.

The video of African sign raising usually grows up in less than 20 seconds, with more than ten African children gathered behind a small blackboard, following the photographer to recite the Chinese words on the blackboard. The content mostly includes sending birthday wishes, confessing on behalf of others, or advertising products, with contact information such as phone or WeChat messages left on the blackboard.

The selling price of African billboard videos has now exceeded 200 yuan per piece, with prices ranging from 10 yuan to 220 yuan