People cannot gain anything without sacrificing something, you must present something of equal value in order to gain something. This is the principle of equivalent trade in alchemy.
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- 超喜欢这个动漫,虽然弥漫着哀伤,探讨着牺牲和获得,很沉重,可是道理很深刻。以上的话语贯穿整部动漫。