Zheng Yi: Male, born in 1974, master, professor-level senior engineer. He once worked in Tianjin Railway Third Survey and Design Institute and Beijing Urban Construction Design and Research Institute. From 2005 1 1 to September 20, 20051,he served as deputy manager of network integration department, deputy manager of planning and construction department, director of office, general manager of pre-planning department and assistant to general manager of Beijing Infrastructure Investment Co., Ltd.; 2065438+Since September 2005, he has served as assistant to the general manager of Beijing Infrastructure Investment Co., Ltd. and general manager of the rail transit business department.