Yuanyuan, Tutu, Sun Su, Chunxiao.
According to the query of 9Ku Music, "Baby Jesus" was sung by Yuanyuan, Rabbit, Sun Su, and Chunxiao, with lyrics written by Nao Nao, and composed by the Olive Branch Band. It was released on July 8, 2012.
Excerpts from the lyrics: Baby Jesus, the moon shines on me, the stars smile at me, and my mother hums a song of praise.