This is a promotional video for a Chinese investment company.
It's making big promises.
Invest in its cryptocurrency, and you'll get massive returns.
More than 100,000 people did just that.
I thought there was an opportunity, so I sold my house in Beijing,
and I got some of my father's pension,
my wife's savings, My little brother's savings invested it in the company.
Then it all went wrong.
Lots of households put several million or tens of millions of yuan into this.
So the consequences were catastrophic.
It's unprecedented really in terms of both the scale and the complexity of the nature of the fraud itself.
Law enforcement now say the whole thing was a massive scam.
You're talking about something that's so big.
The value to all saw most everything else and the numbers are so large they don't really make sense anymore.
So how was it allowed to happen?
Who was the woman behind it?
And what will happen to the money?
This is the Chinese crypto queen for the documentary from the BBC World Service.
I'm Tony Han, a reporter with the BBC's Global China unit.
A dance troupe walks out onto a stage in the middle of a packed banquet hall.