This is about the "arduous journey" of people from the future exploring ancient humans 500 years later (＾－＾)V Cheng Yan doesn't understand why the professor said that ancient humans behaved like this. This is completely wrong with what he thought (o′ェ｀o) The author's copywriting is useless and can't be written (.＿.)ﾉ…………………………………………