Traveling through history leaving a name

[System prompt]: There are 364 days, 23:59:52, and [-] days until the next mission...
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Task dynasty: the end of the Eastern Han Dynasty.
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Mission time: 200 AD.
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Task requirements: assist Cao Cao's forces to unify China, change history, and leave a name in history.

Keywords of the novel: No pop-up window, The Complete Works txt download, The latest chapter reading