Step 2 introduce

The Yuan Dynasty (127 1 year-1368) was a unified empire established by Mongols in the history of China, with its capital in modern Beijing.

1260, Kublai Khan, established the "great unity" of the Yuan Dynasty. 127 1 year, Kublai Khan changed the name of the country to "Dayuan" in the Book of Changes, and successively eliminated the Jin Dynasty, Xixia, Dali and other regimes. 1276 Lin 'an was captured and the Southern Song Dynasty fell. 1279, the remnants of the Southern Song Dynasty were eliminated after the Yashan Sea War, and China was completely unified, ending the separatist situation since the Five Dynasties and Ten Kingdoms.

1368, Zhu Yuanzhang led the peasant army to capture Nanjing, then the Northern Expedition occupied Dadu, and the Yuan Dynasty perished.

1402, Chen Yuangui and Li Chi usurped power, established "Tatar", and the Northern Yuan Dynasty perished.