Before Xiang Yu launched the assault, forces from other insurgent principalities had arrived at Julu to reinforce the Zhao state, but they did not dare to advance for fear of the large Qin army and only garrisoned outside of the battle area. When Xiang Yu attacked the Qin forces, the other rebel armies did not participate in the fighting and they watched the battle from their camps. After seeing Xiang Yu defeat the 300,000-strong Qin army, the other insurgent forces came to join him out of admiration for his martial valour, thus increasing the size of his army to 400,000. When Xiang Yu received them at the gate of his camp, the rebel commanders were so afraid of him that they sank to their knees and did not dare to look up at him.