You are not allowed to change other people’s titles on Douyin, but others can change them themselves. You can also remind them and let them change them themselves, and then if you ask them to change them, in many cases, then It can be changed, but if you want to change it, you have to get his consent, or if you want to get the video and change the title, you have to get his consent, because if you don't If it is done with his consent, it is an infringement.