Zhang Liang
One of Xiang Yu's uncles, Xiang Bo, shared a close friendship with Liu Bang's advisor Zhang Liang. Xiang Bo feared for his friend's life so he sneaked to Liu Bang's camp to warn Zhang Liang about the peril he was in, telling Zhang to flee. Liu Bang was shocked when Zhang Liang related the news to him, and he sought advice from Zhang to avoid danger. Zhang Liang instructed Liu Bang to enlist the help of Xiang Bo to reduce Xiang Yu's suspicions. Liu Bang met Xiang Bo and treated him like an honoured guest, flattering Xiang Bo and pretending to arrange for a marriage between his son and Xiang Bo's daughter while asking Xiang Bo to plead with Xiang Yu on his behalf. When Xiang Bo returned to Xiang Yu's camp later, he assured his nephew that Liu Bang had no ill intentions, and conveyed Liu Bang's message that he was willing to submit to Xiang Yu.