He rides the belt into the scanner, but the staff quickly stops the machine . . . and he has to crawl out the other side. According to reports he didn't want to take off some of his belongings, and that's why he put himself through the scanner.
(Search Newsflare for "Chinese Man Climbs Through Train Station Security Scanner." At 0:20 the video cuts to him coming out of the other side.)
THIS IDIOT just didn't know how it all worked below! hahahhahaa