两汉时期,商品经济非常发达,五铢钱流通十分繁盛,经常会出现流通货币数量不足的情况。政府惯用的手段是将钱币减重,增加名义货币流通的总量。自三国直至南北朝时期,国家分裂,各地政权对立,铸行虚币大钱成为各政权掠夺民间财富 Han Dynasty, the commodity economy is very developed, five baht money circulation is very prosperous, often there will be insufficient circulation of currency. The usual method used by the government is to reduce the weight of coins and increase the total amount of nominal currency circulation. From the Three Kingdoms until the Northern and Southern Dynasties, the state was divided and the regimes across the country ran counter to each other. Great money was cast into the virtual currency and the regimes plundered the private wealth