The founder of health code and travel code is Ma Xiaodong. The 34-year-old founder of Guo Yun Data Company is a leader in the big data industry. Master of China University of Science and Technology, leader of China's big data industry, founder and CEO of Suzhou Guo Yun Data Technology Co., Ltd., the genius behind China's big data has made great contributions to epidemic prevention and control. Master of Computer Science, China University of Science and Technology, founder of health code and travel code. It has 20 big data invention patents.