What's the difference between five emperors' coins and Feng Shui copper coins?

Five emperors' money was the official currency in circulation in the Qing Dynasty, especially the five pieces of Qianlong Jiaqing, Kangxi and Yongzheng of Shunzhi, which were divided into true and false, old and new.

Geomantic copper coins refer to folk geomantic coins (including articles cast in the shape of coins). There is no difference between true and false, only new and old.

Five emperors' coins can be used as feng shui coins.

But feng shui coins are not just five emperors' coins.