I had an Australian friend who did stuff like this. He was handsome and charming and spoke good Chinese. One time they paid him to put on a lab coat and glasses and pretend to be a scientist speaking for a pharmaceutical company from Europe. He said eh didn't want to do it and was afraid, but they gave him 5000 rmb for a few hours work. In the Shanghaiist it reports that there have been some crack downs on the Rent a Laowai events in Shanghai and Beijing. Crack downs meaning arrests.