Invincible copy system

This is an era when the system is king, and it's finally here for me!
Gold finger fell from the sky, happy to mention the ability to copy!Regardless of martial arts skills, literature, military strategy, all can be used for your own use!
Well, thousands of words in the preface can be summed up in one sentence: the system is really good, the system is really fragrant!

Main characters: Zhang Fan, Han Xue,

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