Using other people's videos to sell goods on Douyin is not allowed and violates Douyin's regulations and laws and regulations. According to Douyin's user agreement, only individuals or organizations that own the copyright of the video or are authorized can post videos on Douyin. Unauthorized use of other people's videos may lead to infringement and may be subject to legal liability.

If you want to sell goods on Douyin, it is recommended that you make your own original videos to showcase products, promote brands, or provide relevant content. This is more in line with Douyin's regulations and can also increase trust and appeal.