For certification, prepare relevant materials. If you don't know, log in to the academic degree certification application system of the study abroad service center of the Ministry of Education to inquire about the materials needed to submit academic degree certification. Generally 1-3 months later, regardless of whether the certification is passed or not, the results will be mailed to you. If it is difficult and you are worried that the certification will not pass, you can find Wan Yisi, and the success rate will be much higher.