In comparison to other dynasties in china’s history, how can the period of mongol control over china be characterized?

The bilateral relations between Mongolia and the People's Republic of China have long been determined by the relations between China and the Soviet Union, Mongolia's other neighbor and main ally until 1990. With the rapprochement between the USSR and China in the late 1980s, Sino-Mongolian relations also began to improve. Since the 1990s, China has become Mongolia's biggest trading partner, and a number of Chinese businesses are operating in Mongolia.