《汉书·传·叙传下》
留侯张良袭击秦始皇，后来成了汉王：心腹，献计智取武关，解除鸿门之危。
留侯袭秦，作汉腹心，图折武关，解厄鸿门。
Liu Hou Zhang Liang attacked King Qin Shi Huang and later became Han Wang's confidant, offering strategies to capture Wuguan and resolve the plight of Hongmen