It is definitely copyright infringement. It depends on the intensity of local crackdowns. If you mix some wrong songs, you will be caught 100% of the time.

There are cases of people being caught selling car music USB flash drives. This is a music copyright infringement! For U disks with music purchased through the Internet, buyers cannot identify the copyright of the music contained in them. They can only save relevant certificates of the purchase source to prevent legal violations. As for the merchants selling the above USB flash drives, some of them have been legally authorized by relevant national departments, which means they are legal. If you do not go through legal procedures, you are suspected of violating the law, and you may be held responsible for relevant legal liabilities. TikTok does not infringe music copyright. The music on Douyin is free to use and does not constitute copyright infringement, but it can only be used on Douyin.