Secretary of Zhongguancun Street Working Committee, Haidian District. Li Changping, deputy director of Haidian District Municipal Work Committee of Zhongguancun Science Park, is a public figure with great title. Li Changping's object, Zhang Xin, is also a public figure and secretary of the Zhongguancun Street Working Committee in Haidian District. They complement each other in their work and are very sweet and warm.