Money is moving from China to Vancouver in some "inappropriate" ways, and the Chinese government isn't happy about it.
In China, each person is limited to moving up to $50,000 out of the country each year. People move money all the time, sometimes legitimately, in order to get around these currency controls. The way I have seen it being used is that a person will hire or use many, many smurfs who will each fill out a bank form to wire $50,000 each on behalf of another person. In these bank forms, they claim to be the owner of the funds, when in reality they are not. One employment law case found a person from China had a large sum of money that was moved to Vancouver this way. A whole number of people each went to a bank, each made deposits so she could buy her house. When you have transaction after transaction of exactly $50,000, that is suspicious.