Li Bingbing.

According to KuWo Music query, the original singer of "Mama Baby" is: Li Bingbing, album: "Mama Baby". Lyricist: Xing Zenghua, composer: Chen Jiongshun. Lyrics: "Green grass and blue sky, what a beautiful world, big hands and small hands take me away, I am mother's baby, I grow up day by day, you get older day by day."