How wide was the territory of the Yuan Dynasty?

The territory area in the prosperous period of Yuan Dynasty: 2 1 227,400 square kilometers in the north and the Arctic Ocean in the north; Starting from today's Irtysh River in the west; East to the Sea of Okhotsk. In the east, it owns the northeast of the Korean peninsula. The southwest includes Kashmir, Bhutan and Sikkim at the southern foot of the Himalayas, northeastern Myanmar and northern Thailand (including Mongolia, Siberia, Kazakhstan, Kyrgyzstan, northern Vietnam and eastern Iran). Kublai Khan hits the Danube).