Yinquan, pronounced as yíngēn, is an old customary name in China, indicating the supply of funds in the financial market.
Before the abolition of two yuan, China's financial system was based on silver, which was used in market transactions, so it was customary to call the supply of monetary funds "silver money".
If there are more borrowers and fewer lenders in the market, that is, the supply of funds in the market is less than the demand, it is called "tight money" or "tight money"; On the other hand, if there are more lenders and fewer borrowers in the market, that is, the supply of funds in the market exceeds demand, it is called "loose money" or "loose money".
This idiom is still used to reflect the relationship between supply and demand of market funds in financial business activities and related theoretical research.