As long as you have a master's degree in law, you can apply for a doctorate in China University of Political Science and Law.
China University of Political Science and Law, founded in 1952, is located in Beijing and directly under the Ministry of Education of China. It is a national key university with the characteristics and advantages of law, literature, history, philosophy and other disciplines. Its predecessor was Beijing University of Political Science and Law. Peking University, Tsinghua University, yenching university, Fu Jen Catholic University, four universities, such as law, political science, sociology and other disciplines, are integrated, ranking among the national "double-class", "2 1 1 engineering" and "985 engineering advantage discipline innovation platform".