What is Yumei's position? Independent director of Chen 'an Technology

Yu Mei: Female, born in 1969, with China nationality and no permanent residency abroad, graduated from Purdue University in the United States with an MBA, a registered accountant in China, a registered accountant in Hong Kong and a chartered accountant in the United Kingdom. He has worked in China Construction Sixth Engineering Bureau Co., Ltd., Tianjin Tongxin Certified Public Accountants, Tianjin Gulf Mining Co., Ltd., Great Wall Certified Public Accountants Co., Ltd. and Beijing Aimingfu Management Consulting Co., Ltd.. He is currently a supervisor and consultant of MINO Zhihua (Beijing) Management Consulting Co., Ltd., an executive director and manager of Tianjin MINO Consulting Service Co., Ltd., and an independent director of Suzhou Shiming Technology Co., Ltd. (300522). SZ) and Beijing Hengtai Wanbo Petroleum Technology Co., Ltd.