Liu Dun
Beijing Jiaotong University
China

Liu Dun — Dr. Sci. in Economics, Labor Economics Department, School of Economics and Management,

3, Shangyuancun, Haidian District Beijing, People’s Republic of China, 100044

Geng Yuan
Capital University of Economics and Business
China

Geng Yuan — Dr. Sci. in Economics, Labor Economics School

121, Zhangjialukou, Huaxiang Fengtai District, Beijing, People’s Republic of China, 100070

Yuan Lunqu
Beijing Jiaotong University
China

Yuan Lunqu — Professor, Labor Economics Department, School of Economics and Management

3, Shangyuancun, Haidian District Beijing, People’s Republic of China, 100044