RT Journal T1 Research on Promoting China's Service Trade Liberalization through High-level Openness A1 YU Rongguang, WANG Hongwei PB Journal of Guizhou University of Finance and Economics FD 2023-09-15 YR 2023 JF Journal of Guizhou University of Finance and Economics JO Journal of Guizhou University of Finance and Economics VO 41 IS 05 SP 1 DO K1 regional service trade agreement;depth of regional service trade agreement;service trade restriction index;market access LK {https://gcxb.gufe.edu.cn/EN/article/article_9421.shtml}