According to the mayor’s office, Sylvester joined Emanuel when he met in Beijing with executives from CRRC Sifang, which has planned to replace half of the city’s train fleet with “L” cars manufactured at new Southeast Side facility. Emanuel’s official Twitter account tweeted that he was “on a mission to save jobs threatened by a trade war” alongside a photo of the meeting. In an interview with the Tribune before the trip, however, Emanuel acknowledged there was no specific threat to the deal, but he noted uncertainty surrounded trade between the two countries.