until 204 BC. Liu Bang's subordinate Ji Xin disguised himself as his lord and surrendered to Xiang Yu, buying time for Liu Bang to escape. When Xiang Yu learned that he had been fooled, he became furious and had Ji Xin burned to death. After the fall of Xingyang, Chu and Han forces were divided on two fronts along present-day Henan. However, Xiang Yu's forces were not faring well on the battlefront north of the Yellow River, as the Han army led by Han Xin defeated his troops in every single battle. At the same time, Liu Bang's ally Peng Yue led his men to harass Xiang Yu's rear. Treaty of Hong Canal By 203 BC, the tide had turned in favour of Han. Xiang Yu managed to capture Liu Bang's father after a year-long siege and he threatened to boil Liu's father alive if Liu refused to surrender. Liu Bang remarked that he and Xiang Yu were oath brothers, so if Xiang killed Liu's father, he would be guilty of patricide. Xiang Yu requested for an armistice, known as the Treaty of Hong Canal, and returned the hostages he had captured to Liu Bang as part of their agreement. The treaty divided China into east and west under the Chu and Han domains respectively. Battle of Guling Shortly after, as Xiang Yu was retreating eastwards, Liu Bang renounced the treaty and led his forces to attack Western Chu. Liu Bang sent messengers to Han Xin and Peng Yue, requesting for their assistance in forming a three-pronged attack on Xiang Yu, but Han Xin and Peng Yue did not mobilise their troops and Liu Bang was defeated by Xiang Yu at the Battle of Guling. Liu Bang retreated and reinforced his defences, while sending emissaries to Han Xin and Peng Yue, promising to grant them fiefs and titles of vassal kings if they would join him in attacking Western Chu. Defeat and death In 202 BC, Han armies led by Liu Bang, Han Xin and Peng Yue attacked Western Chu from three sides and trapped Xiang Yu's army, which was low on supplies, at Gaixia. Liu Bang ordered his troops to sing folk songs from the Chu region to create a false impression that Xiang Yu's native land had been conquered by Han forces. The morale of the Chu army plummeted and many of Xiang Yu's troops deserted in despair.