Tiffany Ting: Male, born in 1987, with a master's degree. Mr. Tiffany Ting was the investment manager of BOC International Securities Co., Ltd. (Hong Kong) from August 20 10 to February 20 14; From March 20 14 to August 20 15, he served as the investment consultant of Sun Hung Kai Financial Group (Hong Kong); Self-employed from September 20 15 to February 20 16; From March 20 16 to April 20 17, he served as the operation director of Beijing tianxiaxiu technology co., ltd; From 2065438 to May 2007, he served as the secretary of the board of directors of Beijing Tianxiaxiu Technology Co., Ltd. Mr. Tiffany Ting obtained the qualification certificate of secretary of the board of directors of Shanghai Stock Exchange from 2065438 to April 2008.