According to ChainCatcher, Beijing police and Beijing branch of the State Administration of Foreign Exchange jointly cracked a series of cases involving virtual currencies, involving more than 2 billion yuan, involving 15 provinces and cities including Beijing, Shanghai, and Zhejiang. It is worth noting that this case not only involves various means of crime, but also a "serial case" with complex intricacies from darknet transactions to illegal foreign exchange trading.

It is reported that the Beijing police had received clues that someone used the "dark web" and virtual currency to transmit information and conduct virtual currency transactions, especially illegally selling various types of private information of Chinese citizens. In addition, the police found that the suspect Yan Moumou used virtual currency to settle all transactions in the process of selling citizen information. In the process of exchanging virtual currency for cash, the amount was particularly huge, which also attracted the attention of the police.

After in-depth investigation, the criminal facts of the six members of Lin Moumou's underground bank and Yan Moumou who illegally sold citizens' information gradually became clear. In December 2023, the police divided into four groups and took action simultaneously in Wenzhou, Nanjing, Beijing, and Harbin to arrest all the suspects involved in the case. The police seized more than 20 mobile phones and other electronic devices and more than 30 bank cards engaged in illegal activities on the spot. After counting, the case involved a total of more than 2 billion yuan in funds, and more than ten virtual currency wallets were used for illegal transactions.

The Beijing Municipal Public Security Bureau's Economic Crime Investigation Team stated that in my country, virtual currency-related business activities are illegal financial activities. Using virtual currency as a cross-border transaction medium to achieve illegal exchange of foreign exchange and RMB is illegal foreign exchange trading.