Who was Kublai Khan who led the Mongolian army to attack the Southern Song Dynasty at the end of the Southern Song Dynasty?

At the end of the Southern Song Dynasty, Kublai Khan led the Mongolian army to attack the Southern Song Dynasty, and Zhang Hongfan was the main commander of the war to destroy the Song Dynasty.

In the sixth year of Yuan Dynasty, the dispute between Song and Yuan Dynasty was Xiangyang. The troops besieged by the Yuan Army in Xiangyang are mostly the old army of Li Tan, which was adapted after the counter-insurgency, and is famous for its bravery, ruthlessness, arrogance and unruly. The Yuan government was worried that it would be difficult to find a general with both ability and morale to command this team. It happened that someone mentioned Zhang Hongfan's name.

The commander-in-chief of the Song Dynasty was Prime Minister Bo Yan. Zhang Hongfan suggested to Bo Yan that the route for providing grain in Xiangyang should be cut off first. Bo Yan adopted this suggestion and sent Zhang Hongfan to guard Wanshan route for providing foodstuff. In an encounter, he won an unexpected victory by winning more with less, and Bo Yan had a further understanding of Zhang Hongfan's talents.

The battle to destroy the Song Dynasty is described in detail as follows:

In the eighth year of the Yuan Dynasty, Bo Yan listened to Zhang Hongfan's plan and decided to gradually narrow the siege of Xiangyang. Zhang Hongfan then built a strong barrier fortification "Word City" between Xiangyang and Fancheng. "One word city" cut the Xiangfan military defense zone, which was originally a whole, into two parts. In this way, the encirclement further approached Fancheng.

In the second year, when attacking Fancheng, Zhang Hongfan was shot in the elbow. He bandaged the wound and immediately went to the base camp to meet the commander-in-chief, proposing that a navy division cut off Fancheng's rescue. At the same time, in terms of attack strategy, it is suggested to attack Fancheng by land and water. As long as Fancheng is captured, Xiangyang will have no danger to defend.

With the approval of the commander-in-chief, he immediately organized a new attack. He took the lead, swooped down in turn, and soon won Fancheng. Fan Tianshun, commander-in-chief of Fancheng in Song Dynasty, died in battle, and Niu Fu led hundreds of soldiers in street fighting. After his defeat, he went into battle. This is an extremely difficult battle.