Clockwise from top: Commuters on a Beijing Subway platform check out the rolling commercials that appear with notices about the next train; Passengers on a public bus watch a mobile television screen during their commute to work in Beijing; A taxi driver demonstrates how to use the touch-screen information service in his car; Subway passengers use cell phones to get information on their way to work. Most bus and subway services in major Chinese cities are fitted with audio-visual systems that display travel information and advertisements. Experts say mobile media is changing the lifestyles and habits of many Chinese residents. Photos by Wang Jing / China Daily