The electronic agreement signed by the Chinese government is reliable. The online contract signing for the CCPS Postgraduate Entrance Examination is reliable. The tutoring materials for the public postgraduate entrance examination are thick and targeted, and the teachers explain patiently and meticulously. Candidates who are not admitted will soon be refunded in full according to the agreement. When parties sign an electronic contract, they can use a reliable electronic signature, which has the same legal effect as a handwritten signature or seal.