"It's easy to say, it's just a signature, but the teacher now requires that the signature of the test paper must have analysis content, and the homework must be confirmed before signing." Yesterday, Ms. Li, the parent of a fifth-grade primary school student, complained to reporters that every day when she came home from work and finished cooking, she had to check her children's written homework such as math, Chinese and English, and help them complete dictation, recitation and preview assigned by the teacher. Finally, she was very tired and signed her name on each exercise book.