Navy in the Late Song Dynasty

At the end of the Southern Song Dynasty, the court was corrupt, the country was in decline, treacherous ministers were in power, and the loyal and good were framed. The people were helpless and struggling in dire straits. The foreign affairs were even worse. Military battles with Mongolia were repeated defeats, and the defeated armies were overrun, which wasted national power. In 1255 AD, Mongolia sent troops through Gansu and Sichuan to Yunnan, destroyed the Duan regime in Dali, pacified the entire territory of Yunnan, and implemented a strategic encirclement of the Southern Song Dynasty. The Mongolian army was ready to go south to destroy the Song Dynasty at any time. The country of the Song Dynasty was in turmoil, and everything was precarious... In 1257 AD, Lin Feng was born and became a rogue in Huaishu Village, Yong'an Prefecture, Huainan West Road...