Liu Xuesheng: Male, born in 1963, China nationality, without permanent residency abroad, master's degree, senior accountant, certified public accountant in China. He used to be manager, accountant and deputy general manager of OCT Group. Currently, he is an independent director of the Company, secretary general of Shenzhen Institute of Certified Public Accountants, director of China Institute of Certified Public Accountants, executive director of Guangdong Institute of Certified Public Accountants, vice president of Shenzhen Institute of Accounting, director of Shenzhen Institute of Metrology and Quality Inspection, off-campus master tutor of Shenzhen University, independent director of Caesar Group Holdings Limited and Ping An Fund Management Company.