Which dynasty in the history of China had the largest territory?

The Yuan Dynasty was the largest territory in the history of China, which not only developed its foreign relations unprecedentedly, but also spread from Asia to Europe and Africa, and its territory was unprecedented in the history of our country. The Yuan Dynasty went north to Yinshan Mountain, south to the South China Sea Islands, northeast to Sakhalin Island and northwest to Xinjiang and Central Asia. Today, Xinjiang, Tibet, Yunnan, Northeast China, some islands in Taiwan Province Province and the South China Sea islands are all within the jurisdiction of the Yuan Dynasty.

The first paragraph of Song Lian's "Ten Geography of Yuan History" in Ming Dynasty is also relevant. "From feudalism to counties, there are people in the world, Han, Sui, Tang and Sheng, but the territory is wide and salty. Han terrier lived in the north, so Sui couldn't serve Dongyi, Tang suffered in Xirong, and Song suffered many misfortunes in the northwest. If the Yuan Dynasty set out from Shuomo, merged with the Western Regions, pacified Xixia, destroyed Nuzhen, became a minister of Korea, decided Nanzhao, and then went down to Jiangnan, where there was only one family in the world, so its land exceeded Beiyin Mountain, West quicksand, East Liao left and South China Sea. Gaihan is 9320 li long from east to west, 13368 li from north to south, 951li from east to west, and 169 18 li from north to south. The southeast of the Yuan Dynasty failed to reach the Han and Tang Dynasties, and the northwest has passed, and there are still countless miles. "