A railway police officer and a train attendant promote no-smoking awareness aboard a train in Wuhan, Hubei province, on May 27, 2026. (XIONG ZHENDI / FOR CHINA DAILY) A coalition of 16 public health, tobacco-control, and environmental protection groups is calling on China to impose a nationwide smoking ban on all conventional trains and railway platforms, arguing that partial restrictions are no longer sufficient to protect passengers from secondhand smoke.