According to China's foreign exchange news, recently, Huang Zhen, director of the Institute of Financial Law of the Central University of Finance and Economics, said in an interview that one of the risks of blockchain is the loopholes in the blockchain technology itself. For example, the "The DAO" hacking incident on Ethereum caused a large number of coins to be stolen. The second risk is that in the application process of the blockchain, criminals may misappropriate the name of the blockchain to conduct pyramid schemes, fraud, disrupt market order, and infringe on the rights of consumers and investors. The third risk is that it may lead to the issuance of virtual currencies without the approval of financial regulatory authorities for illegal financial activities. Paying with virtual currency, supporting so-called dark web, underground transactions, etc., has become a hotbed for corruption, illegal crimes, and also brings huge financial and legal risks.