According to the investigation, Sun is the legal representative of Anhui Juncheng Technology Co., Ltd., Tongda Computer Information Consulting Department of Hefei High-tech Zone and Hefei Branch of Anhui Juncheng Technology Co., Ltd., a shareholder of Mukun Technology Co., Ltd., Anhui Xiyue Education Technology Co., Ltd. and Anhui Juncheng Technology Co., Ltd., and a senior manager of Mukun Technology Co., Ltd., Anhui Juncheng Technology Co., Ltd. and Tongda Computer Information Consulting Department of Hefei High-tech Zone.