Zhimin Qian, a 47-year-old Chinese national also known as Yadi Zhang, was convicted in the United Kingdom for orchestrating a massive fraudulent investment scheme in China and laundering the proceeds through cryptocurrency. Between 2014 and 2017, Qian ran a company in China that promised investors extraordinary returns of up to 300%, ultimately defrauding more than 128,000 victims and raising approximately 40 billion yuan. The majority of victims were individuals aged between 50 and 75, who were lured by false promises of daily dividends and guaranteed profits. When the scheme collapsed, Qian converted the illicit proceeds into Bitcoin and fled China using false documents, entering the UK in 2018. Upon her arrival, she attempted to launder the funds by purchasing luxury properties and running businesses with the assistance of Jian Wen, who was later convicted and sentenced to over six years in prison for her role. In October 2018, the Metropolitan Police, acting on intelligence about the movement of stolen cryptocurrency, raided Qian’s London residence and seized 61,000 Bitcoin, which was then worth hundreds of millions of pounds and has since appreciated to over £5.5 billion ($7.3 billion), making it the largest cryptocurrency seizure in history. The investigation, which spanned seven years and involved cooperation with Chinese law enforcement and the UK’s National Crime Agency, required the review of thousands of documents and evidence from multiple jurisdictions. Qian pleaded guilty at Southwark Crown Court to acquiring and possessing criminal property under the Proceeds of Crime Act. The case is considered a landmark in both the scale of the fraud and the value of the assets recovered. Authorities highlighted the complexity of the investigation, which included tracking the movement of cryptocurrency wallets and unraveling the laundering process. The UK government is now engaged in negotiations regarding the disposition of the seized funds, with Chinese victims seeking restitution. The conviction underscores the growing use of cryptocurrency in large-scale financial crimes and the challenges faced by law enforcement in tracing and recovering digital assets. The Metropolitan Police emphasized their commitment to pursuing justice for the thousands of victims and to disrupting the use of the UK as a haven for laundering proceeds of international fraud. The case also demonstrates the importance of international cooperation in tackling transnational cyber-enabled financial crime. Qian’s sentencing is pending, and the outcome is expected to set a precedent for future cases involving cryptocurrency and cross-border fraud.

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A second defendant characterized as a Bitcoin fixer was convicted for her role in the money-laundering scheme tied to the seized cryptocurrency. Later coverage reported the pair's convictions as part of the same UK prosecution.
A Chinese national described in coverage as the main fraudster or "Bitcoin Queen" pleaded guilty in a UK court in connection with the £5.5 billion Bitcoin fraud and laundering case. Multiple outlets reported the plea as a major development following the record seizure.
UK authorities seized roughly £5.5 billion in Bitcoin linked to a large fraud and money-laundering operation, described across reports as the world's largest cryptocurrency seizure. The seizure became the central law-enforcement action in the case against the accused Chinese nationals.
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