I was there from 2007-2016, and also in 2002, but that was a dorm experience at PKU. The internet VPNs were just horrible, but the tradeoff was all the pirated video content available on Chinese video websites, so I got used to it.
2003: I went to China with 1 suitcase and came back with 2. The new one was absolutely full to the brim with pirated DVDs and fairly good quality fake LV from the "free markets". Had to chip a Sony DVD player because half of them were random regions. Back then, checking the right boxes and declaring sensible amounts on US claims declaration forms reduced probability of searches.