Xiang Yu sent Long Ju to lead 200,000 troops to help Tian Guang. The allied forces of Qi and Chu lost to Han in the first battle. Someone advised Long Ju to avoid engaging Han Xin directly and focus on strengthening their defences, while asking Tian Guang to rally support from the Qi cities that had fallen to Han. In that case, the Han army would eventually be deprived of supplies and be forced to surrender. However, Long Ju rejected the plan and insisted on attacking Han Xin. On the night before the battle, Han Xin sent his men to dam the Wei River (濰水) with sandbags. The next morning, after a skirmish with Long Ju's forces, Han Xin feigned defeat and retreated to lure Long to follow him. When about a quarter of the Chu army had crossed the river, Han Xin signalled to his men to open the dam. Many Chu soldiers drowned and Long Ju was isolated with only a fraction of his forces. Taking advantage of the situation, Han Xin launched a counterattack. Long Ju was killed in action and the rest of the Chu army disintegrated as Han Xin continued pressing the attack. Tian Guang fled. Han Xin pursued the retreating enemy forces to Chengyang (城陽).