The source of happy gifts is an expression pack gift of Tik Tok live broadcast platform, which can be used to express happy and positive emotions. In Tik Tok, a gift from a joy source needs 999 coins, which is a relatively high price. However, the price of the gift does not affect the user's love and use of it, because the source of the happy gift can convey happiness by expressing positive emotions, so that people around it can feel the happy atmosphere, which is one of the reasons why it is widely spread on social media platforms such as Tik Tok.