Yes there is risk, but it is minor.
China is communist state. Residents have only what the state allows them to have, and the state can take away the bank accounts, cars, and domestic real estate at any time. They CANNOT take away whatever residents have stashed overseas.
A resident can either repay their Canadian mortgage from a Chinese source, or repay from sale of Canadian real estate. If the Canadian property was bought at 3M with 1M down, & never traded, it need only sell for 67% of cost. But … if the resident had been successfully trading Canadian property, and had interim gains to offset against, they could afford to sell the Canadian property for a lot less.
It means that residents are best served if they trade within a collective bubble, start their trading as early as possible, and stay close to the herd. Exactly what we are seeing.
Yes the bubble WILL eventually burst, but who does it really affect - ordinary Vancouverites are not those buying the luxury condos.
It is about permanently getting funds out of China; and it is a lot safer, & more utilitarian, than simply depositing funds in an offshore account.
SD