The cryptocurrency world, or digital currency, includes many types of cryptocurrencies, such as Bitcoin and Ethereum. Its value can be analyzed from multiple perspectives:

1. **Investment value**: For investors, cryptocurrencies have the characteristics of high risk and high return. Some people have gained huge wealth growth by buying and selling cryptocurrencies, but some have lost money. Therefore, its value depends on personal investment strategies and market conditions.

2. **Technology value**: Blockchain technology is the foundation of cryptocurrency, with the characteristics of decentralization, transparency, and immutability. These characteristics have potential application value in many fields, such as finance, supply chain management, copyright protection, etc.

3. **Payment value**: In some scenarios and regions, cryptocurrency is accepted as a means of payment, which can provide faster cross-border payments and lower transaction fees.

4. **Social value**: The rise of cryptocurrency has prompted people to rethink the nature of currency and how the financial system works.

However, there are also some problems and risks:

1. **Price volatility**: The cryptocurrency market is extremely volatile, which poses risks to investors.

2. **Regulatory issues**: Different countries and regions have different attitudes and regulatory policies towards cryptocurrencies, which is also an uncertain factor.

3. **Security issues**: Cryptocurrency exchanges and wallets are at risk of being hacked.

4. **Speculative behavior**: There is a lot of speculation in the market, which may lead to price bubbles.

In China, according to the announcement issued by the People's Bank of China and other six ministries in 2017, domestic trading platforms are not allowed to conduct trading services related to virtual currencies. Therefore, the trading and use of cryptocurrencies in China are restricted.

In summary, the value of the currency circle varies from person to person. It may bring both benefits and risks. Whether to invest in the currency circle needs to be decided based on personal risk tolerance, investment knowledge and goals, and compliance with local laws and regulations.