2.3 The dilemma of digital currency payments

As of August 31, 2021, there are 5,296 cryptocurrencies worldwide. These vary from supporting infrastructure protocols to programs used for various applications, and the large number of programs means more complexity.

In fact, it makes it more difficult to use cryptocurrencies in the real world as a user. This is because：

1）The amount of cryptocurrency makes it difficult for merchants to effectively accept a wide range of

2）Cryptocurrency price volatility makes it difficult for merchants to adopt

3）No single wallet can hold multiple cryptocurrencies, so some are not easy to use

4）No major market can absorb some cryptocurrencies, so trading becomes difficult