According to the regulations of Beiyang government, an ocean is equivalent to one or two pieces of silver in the Qing Dynasty. One or two ounces of silver is equivalent to 160 RMB in 200 yuan at today's price. According to the actual purchasing power at that time, it was equivalent to 300 yuan today.

The Qing Dynasty used silver. Silver is the general name of silver or silver coins used as currency in feudal dynasties.