Nicknamed the "goddess of wealth", 47-year-old Zhimin Qian orchestrated a Ponzi scheme that promised investors returns of up to 300 percent, defrauding around 128,000 people in China between 2014 and 2017.
It raised billions of dollars, much of which was converted to bitcoin.
After she came to the UK as a fugitive and during a multiyear investigation where she evaded capture, British police seized 61,000 bitcoin worth more than �5 billion ($6.6 billion), which the force called the largest single cryptocurrency seizure in the world.
She was arrested in the northern English city of York in 2024.
Qian, who pleaded guilty to possessing and transfering criminal property in September, appeared emotional as she received the sentence at London's Southwark Crown Court.
Her crimes were highly sophisticated and required careful planning, Judge Sally-Ann Hales told the court on Tuesday.
"Your motive was one of pure greed," Hales told Qian.
Qian "accepts" her conviction, her lawyer Roger Sahota said in a statement after the sentencing.
"She never set out to commit fraud but recognises her investment schemes were fraudulent and misled those who trusted her," the statement said.
"She is deeply sorry for the distress suffered by investors and hopes some good endures from the wealth her work created."
A Malaysian accomplice, Seng Hok Ling, also 47, was jailed at the same court for four years and 11 months after he pleaded guilty to one count of transferring criminal property.
After the sentencing, the Metropolitan Police's head of economic and cybercrime command, Will Lyne, said the seven-year investigation was one of the "largest and most complex" the force had ever undertaken and required collaboration with multiple sides, including Chinese law enforcement.
- Lavish living -
Following scrutiny from Chinese authorities, Qian -- also known as Yadi Zhang -- fled her home country in 2017 and came to Britain. The court heard that she evaded UK authorities for around six years.
She travelled across Europe, staying in upscale hotels and buying jewellery including two watches worth nearly �120,000 ($160,000), the court heard.
With the help of an accomplice, Jian Wen, she rented a lavish London property for around �17,000 a month and claimed to run a successful jewellery business.
Police surveillance of Qian's co-defendant Ling eventually led to her arrest in April 2024.
Wen was jailed last year for six years and eight months over her role in the scheme.
Details of a compensation scheme for victims proposed by British authorities are still being thrashed out in London's High Court in civil proceedings, where more than 1,300 alleged victims have come forward, according to sources close to the case.
A Chinese foreign ministry spokesperson told AFP that Chinese and British law enforcement agencies were "cooperating on cross-border fugitive and asset recovery" in the case.
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