Teachers at a primary school in Nanjing, capital of Jiangsu province, are having a difficult time recognizing many of their new students as among them are 11 pairs of twins, Yangcheng Evening News reported.

Du Yulong, director of the school's dean office, made a special name list for the teachers to better recognize their pupils, and it took more than half an hour for the teachers to take the right kids to their classrooms.