Chen chen Jr. and Chen chen Jr., who likes skipping rope, were diagnosed with gene mutations. Xiao Chen Chen likes skipping rope, a video creator on Tik Tok platform. The homepage says that Chen chen Jr. was born in July, 20 14. He was found to have height problems when he was six months old. At the age of three, he was diagnosed with a gene mutation in Peking Union Medical College Hospital, and his parents made chenchen grow taller by skipping rope.