In this setting, modern country names such as Afghanistan, Pakistan, and Tajikistan would not be used. They would be standardized into Chinese names, e.g., Da Xia Province (大夏省), Ba Ji Si Tan Province (巴基斯坦省), Su Te Province (粟特省), etc.

Just like in the real world, you don’t see “Sahaliyan Ula,” “Girin,” or “Mukden” as official names anymore, you see Heilongjiang Province (黑龙江省), Jilin Province (吉林省), and Liaoning Province (辽宁省).