In 2023, the Dezhou Public Security Bureau in Shandong Province, while investigating a telecommunications fraud case, discovered a new criminal model involving "traditional underground banks + virtual currency" by tracing the flow of funds transaction by transaction. During the case analysis, the police gradually pieced together the relevant financial network by analyzing account transfers and fund trajectories. The investigation revealed that the police ultimately identified 12 main suspects, more than 100 bank accounts, and 6 virtual currency wallet addresses, and drew up a diagram of the gang's structure and fund flow. They then froze the assets involved in the case according to law, successfully cracking the first underground bank case involving virtual currency in the area. (Jinan Daily)