It was probably because the train track here was somewhat unstable, which made the players on the train rather well-behaved. Until Xu Huo got off the train, no player caused any trouble in any train car.
District 001 of C20 is a technologically advanced area. Although there isn't a ubiquitous spatial transmission traffic network, some key points in the city are equipped with spatial transmission devices. To avoid interference, the span between devices is quite large, and they are equipped with interference blocking devices around them, mainly to prevent some players from accidentally using spatial artifacts or devices that would disrupt city traffic.
