The IP Droll was born in 2017. It is composed of Dou Dad, Dou Mom, son Dou Le, and daughter Dou Mi, forming a warm, joyful and creative family of four. Among them, the nursery rhyme animation "Droll's Songs" , shares a lot of funny family education games.

The hits of "Droll's Songs" has exceed 4.6 billion in the three years since its launch on Tencent Children's Channel, ranking No.1 in nursery rhyme animation, which undoubtedly confirms that the Droll series is appreciated by a wide range of children and recognized by parents.