What was their currency?
The Chinese people in the Qin dynasty used banliang as their currency. They were bronze coins with square holes cut through the middle. Qin Shi Huang created the banliang for the whole nation unlike the currencies used before that were only for a certain part of China. Gold was also used and was worth a lot. There is proof that the banliang was used because archaeologists discovered a jar containing 1,000 banliang coins. The coin has a diameter of about 31.7 mm and weighs about 6 grams.