Keeping track of your quadruplets kids

Keeping track of your quadruplets kids

Hair's looking at you kids: Chinese quadruplets have numbers shaved onto their heads so teacher can tell them apart

Six-year-olds Jiang Yunlong, Jiang Yunxiao, Jiang Yunhan and Jiang Yunlin were starting their first day of school

They are so similar even their father finds it hard to tell them aparta