The UK's largest cryptocurrency money laundering case has reached a significant development with Zhimin Qian, also known as Yadi Zhang, pleading guilty in London. The case involves the laundering of over 61,000 BTC, valued at more than £3 billion in 2024, linked to a £5.5 billion investment fraud in China from 2014 to 2017. Jian Wen, a Chinese takeaway worker, was used as an agent to launder the funds through luxury purchases and real estate in the UK. The investigation, spanning seven years and involving UK and Chinese authorities, revealed the use of cryptocurrency to conceal illegal proceeds. Wen was sentenced to six years and eight months in 2024, while Qian remains at large.