Yu longjun: male, born in March 1986, master's degree, certified public accountant (CICPA). He is currently the vice president of investment in Shanghai Jianyuan Equity Investment Fund Management Partnership (Limited Partnership). He used to be the investment director of Shanghai Houyang Investment Management Co., Ltd., the senior investment manager of Kunwu Jiuding Investment Management Co., Ltd. and the senior auditor of Deloitte Touche Tohmatsu Certified Public Accountants.