推荐回答（1个）
轻取南阳，清除后患：刘邦西行入关之时，为了抢时间，在打败南阳守军之后，决定放弃乘胜追击彻底解决南阳的机会。关键时刻，张良主动劝谏，分析利弊。刘邦很是受用，采纳了他的建议，连夜回军，以“约降”的方式和平解放了南阳，避免了腹背受敌的窘境，消除了西行入关的后顾之忧。
智取峣关，进入咸阳：秦王子婴杀掉乱政的赵高后，派重兵踞守峣关，企图阻止刘邦入关。刘邦顺利通过武关后，便遭遇了驻守的峣关秦军。刘邦急于进入咸阳，竟打算用自己的两万人马与秦军死磕。张良力劝他，不如先行贿，再利用秦将的懈怠搞突击。凭借张良的计策，刘邦才能顺利进入咸阳。
退出秦宫，还军灞上：刘邦入了秦宫，眼花缭乱，心里琢磨着想在宫中留宿。樊哙、张良双双出马做他的思想工作。刘邦还军灞上，避免了队伍的迅速腐败，也为以后入关灭项留足了后路。
利用项伯，化险为夷。刘邦入关后犯了一个致命的错误——兵封函谷关——企图称王关中，引得项羽震怒，差点儿让刘邦集团毁于一旦。幸亏项伯施以援手，刘邦得以脱险。整个鸿门事件前前后后，张良随机应变，以一“骗”字力助刘邦成功脱险。
下邑画策，重用人才。彭城大败后，刘邦提出了“捐关以东”的大战略，张良适时推荐了韩信、彭越、黥布三位大将。在这之后，刘邦重用韩信，拉拢彭越，策反黥布，最终战胜了项羽。
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