Dou Er is bigger than Han Dou Er. According to relevant public information, Doo, alias Eva, was born in 1996, and is an online celebrity model. Han, born in 1999, is from Nanjing, Jiangsu. Han's parents divorced when he was a child. After her mother reorganized her family, she became rebellious and blew herself up. She claimed to live to be old, participated in the reality show "Deformation Meter" and was also an online celebrity.