The copy for a short video about banknotes on Douyin needs to be concise, clear and fascinating. You can use humor, wit, thought-provoking and other techniques to catch the audience's eyes and hearts. It should be noted that the copy must be consistent with the content of the video to avoid misleading the audience. At the same time, it is also necessary to follow the Douyin community norms and not involve vulgar, violent, pornographic and other content. Only by writing excellent copy carefully can you attract more attention and likes, and increase the exposure and dissemination effect of the video.