The board of directors of BII Railway Transportation Technology Holdings Company Limited announced that with effect from 27 October 2022, Mr. Zheng Yi has resigned as a non-executive Director in order to devote more time on his other commitments. Following the resignation of Mr. Zheng Yi as a non-executive Director, Ms. Sun Fang has been appointed as a non-executive Director with effect from 27 October 2022. Ms. Sun Fang aged 48, obtained a bachelor's degree in engineering (majoring in transportation) from Beijing Jiaotong University in July 1996.

She also obtained a senior engineer qualification in general layout and transportation specialty in 2007, which was approved by the Beijing Senior Specialized Technique Qualification Evaluation Committee. Between August 2007 and November 2016, Ms. Sun was the deputy general manager and the deputy general manager of general affairs of Beijing Metro Network Administration Co. Ltd. ("Beijing Metro Network").

Between November 2016 and February 2020, she was the deputy secretary of the party general branch and the deputy general manager of general affairs of Beijing Metro Network. Since February 2020, Ms. Sun has been the deputy secretary of the party general branch and the general manager of Beijing Metro Network.