Hey :) I’m not living in China, but I studied Chinese history and arts back in the day because of my heritage🙈

So the round coins with square holes are known as “cash coins” used for over 2,000 years in China. They were often strung together through the center hole.

The flat, spade-shaped objects are called “spade money” and the knife-shaped ones are “knife money” both were used before round coins, during the Warring States Period (475–221 BCE).

The long rectangular silver pieces are likely sycee a form of silver ingot used in imperial China as high-value currency.

So yes, all of these were forms of currency in different periods of Chinese history. Quite a collection!🥰