The slogan of losing the handkerchief is to lose, lose, lose the handkerchief and put it gently behind the child. Don't tell him. The Lost Handkerchief was composed by Guan and Bao Kan, famous musicians. It has a long history and is deeply loved by children. It can be described as a classic children's song. This song, which accompanied countless people's childhood, has a beautiful melody and is catchy. In addition, there is a handkerchief-throwing multiplayer game: the children crouch in a circle, and one of them, A, stands up with a handkerchief and starts walking around the outer circle behind the children. The squatting child began to sing, throw away, throw away his handkerchief and gently put it behind the child. Don't tell him that the children who lost their handkerchiefs before the end of the song must put the handkerchiefs behind A and B, and then quickly return to their original positions. The selected child B must find the handkerchief behind him at the first time. It is a victory to pick up the handkerchief and catch up with the child A who lost it. Otherwise, it is a failure and a program needs to be executed.