I mean it's real Chinese income backed by fake paperwork. There's PRC capital controls, rich PRC national who buy RE abroad are going to do it via laundering services and has been for decade+. Banks are fine with this and have dedicated branches in diasphora area to handle because the money is good and reliable. Sometimes rich Chinese immigrants also do odd jobs to fill time, bored aunties with multi million dollar mansions in Richmond working shifts at River Rock Casino. It's a bizarre world.
I highlighted the original quote where branch is mostly Chinese-Canadian for context. Aurora is 20% Chinese, it's a big diasphora neighbourhood. There isn't some big "fake chinese income" conspiracy, it's the entire (proven) business plan (money laundering) with occasional fraud. I think pretty much everyone knew Chinese are buying million+ propertiers with laundered money, and it fuels the bubble as much as any other foreign buyer.