According to Wuxi Education Bureau and Wuxi senior high school enrollment websites, the purpose of online signing is to standardize and publicize the process of independent enrollment, prevent illegal operation or unfair phenomenon, and protect the legitimate rights and interests of students and schools. Online signing is legally binding. Once the online signing is successful, it means that the two parties have reached a formal employment agreement and cannot change it at will.

The red stripe in the senior high school entrance examination refers to the independent enrollment intention agreement signed by some popular high school and junior high school outstanding students before the senior high school entrance examination, indicating that the school gives students some preferential policies.