China Social Sciences Network (Reporter Wang Chunyan) On September 16, the “Youth Blue Book: China’s Minors’ Internet Usage Report (2023)” (hereinafter referred to as the “Blue Book”) was released in Zhangjiagang, Jiangsu. The editors-in-chief of the Blue Book are Fang Yong, Party Secretary of the Institute of Journalism and Communication of the Chinese Academy of Social Sciences, Ji Weimin, Deputy Director of the Institute of Industrial Economics of the Chinese Academy of Social Sciences, and Shen Jie, Professor of the School of Social Sciences and Ethnic Studies of the University of Chinese Academy of Social Sciences; the deputy editors-in-chief of the Blue Book are Fang Yong, Party Secretary of the Institute of Journalism and Communication of the Chinese Academy of Social Sciences, Ji Weimin, Deputy Director of the Institute of Industrial Economics Ji Lin, director of the Media and Education Center, Yang Binyan, executive editor of the Blue Book and associate researcher at the Institute of Journalism and Communication of the Chinese Academy of Social Sciences, and Chen Weibing, member of the Standing Committee of the Zhangjiagang Municipal Party Committee and Minister of the Propaganda Department, attended the press conference and spoke.

In theory, traffic improvement promotes inter-enterprise trade and inter-industry divi- sion and cooperation, and then forms regional and even national production network.

The construction of a social credit system can improve the urban business environmentin China, and thus potentially affeet inter-firm specialization by influencing their financing andtransaction behaviors. This paper selects a sample of industrial enterprises in 238 prefecture-levelcities in China from 2000 to 2013, takes the policy of restricting luxury consumption in 2010 as apolicy shoek , and uses the data of the defaulters released by the Supreme People’s Court to construct a difference-in-differences ( DID) model to explore the impact of social credit system construction on the specialization among manufacturing enterprises in China and analyze the mainmechanism.