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At the end of the Qin Dynasty, Liu Bang led a large army to capture Xianyang, the capital. Qin Prince Ziying, seeing that the imperial power was lost, surrendered.
Upon entering Xianyang, Liu Bang was captivated by the magnificent Qin palace, filled with countless gold, silver treasures, and beautiful young women. He developed an intention to stay and enjoy these luxuries.
However, his general Fan Kuai and strategist Zhang Liang warned him, saying that indulging in such pleasures would be tantamount to 'helping King Zhou to commit atrocities' (助纣为虐), which would cause him to lose the hearts of the people. Taking their advice, Liu Bang then withdrew his troops to Baxia.