You can ask the school for help. Xue Xin. Com didn't establish a perfect diploma database until after 200 1. People who graduated in 2002 can't find any information about Xue Xin. Maybe the data is not updated and perfect, so they can ask the school for help. China Higher Education Student Information Network (hereinafter referred to as Xuexin. com) was registered and opened in May 2002 by the National College Student Information Consulting and Employment Guidance Center (hereinafter referred to as the Center) and operated by Xue Xin Consulting Service Co., Ltd., which is controlled by the Center. It is an e-government platform designated by the College Students Department of the Ministry of Education.