《宋书·列传·卷五十六》
货币之所以没有采用完全由于战乱长期存在，以至废弃是有原因的，汉代末年便是这样。
钱之不用，由于兵乱积久，自至于废，有由而然，汉末是也。
There are reasons why coins were not used all the time, due to the long-term existence of war, it was abandoned, the late Han Dynasty was like this.