I disagree; there are levels of risk. You'd have to be a bit thick to work on a spousal visa, whereas an F visa offers fairly low risk-it can be ckaimed you are giving lectures, and if it has been renewed in the country, well a nod from the police is as good as a wink.

The f visa would cover you nicely to work in the region issued, whereas if your RP is ussued in Beijing and you go swanning off to Costa Del South China to teach, well, that is risky! Don' tske away others' opportunities because you know of somebody who has really been foolhardy, like the man from Beijing. Life has some risks.p