Liu Q. Research on the Hollowing-out Characterization in the Evolution of Chinese Cities: A Multidimensional Comparative Analysis Based on Guangzhou and Langfang. Bus. Soc. Sci. Proc. [Internet]. 2026 Apr. 1 [cited 2026 Apr. 3];5:119-26. Available from: https://cpcig-conferences.com/index.php/BSSP/article/view/115