Half-liang Coins and Molds of the Qin Dynasty

After annexingthe six states，Ying Zheng gave orders to standardize coins for the convenience of nationwide commodity circulation.The new copper coin weighed halfa liang Bronze Measuring Tools Thirdly，for the convenience of nationwide commodity circulation，the Qin government minted gold and copper coins to replace the currencies made of jade，silver，tin，sea shells or tortoise shells that had been used in different states previously.The new copper coin weighed half a liang（unit of weightequal to 50 grams）and was pierced in the middle with a square hole.It had ever since become the basic form of coins in ancient China.

Lastly，Ying Zheng forced the standardization of the system of weights and measures.For example，the new system provided that the area of land should be measured in terms of mu.As a basic unit of area，the mu（presently equivalent to 0.1644 acre or 0.0667 hectare）is still in use today.The emperor also prescribed that all the carriages made in the country must be six chi（unit of length equal to one third of a meter) wide.

Going in for Large-scale Construction, Wasting Money and Manpower Once Ying Zheng had united the empire, he launched an immense construction project that included the Great Wall,a network of road transport, irrigation works,a palace and his own mausoleum.

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