Peking University. According to relevant information, Duan Rui graduated from Peking University, younger than Cai Lei 1 1 year. Cai Lei, male, 1978 was born in Shangqiu City, Henan Province in May, suffering from gradual freezing. Chairman of Beijing Eskom Medical Technology Company, former financial vice president of Eskom Group, chairman of internet plus Finance and Taxation Union, and electronic invoice promoter of China.