seriously flawed is an overstatement; there have been two studies done so far and while the researchers acknowledge the limitations of the method, in aggregate

seriously flawed is an overstatement; there have been two studies done so far and while the researchers acknowledge the limitations of the method, in aggregate it is considered mostly sound by their peers. But I agree - we should have something a bit more conclusive than 'Chinese names'. But the whole point is that the current provincial government is actively hostile to requiring real estate agents to collect this information. So last names are all we have.