A reporter from Weekly Bunshun posed as a prospective university applicant to meet the individual in question in person, and then followed him to identify the specific laboratory and faculty member at the University of Tokyo. In an earlier issue published two weeks prior, Bunshun also reported on an undercover investigation into a university exam cheating operation. The magazine verified through corporate registration records that the company operated by the Chinese staff member shares the same registered address as the cheating firm.
If you're interested in reading the full article, it is available as a Kindle edition on Amazon Japan. (It is, of course, in Japanese)
by engrishspeaker