Zheng Chengcheng is several years older than Sun.

Two years old. Zheng Chengcheng was born in 1998, while Sun was born in 2000, so he is two years older. Zheng Chengcheng,1998165438+10 was born in Liaocheng, Shandong Province on October 22nd. She is an actress and singer in China and a member of the women's singing group KOGIRLS. Sun, born in Harbin, Heilongjiang on June 27th, 2000, is a Jiashang media artist.