Android app for China railway lookup on a map. Search by train number (G1768, Z35) to see stops, route and times, or by two cities to list same-day trains stopping in both, then tap a train for its map. Same-day shows clock time; overnight uses t / t+1. Public CNRail APIs, not 12306 tickets. 安卓开源应用：输入车次或起终点城市，查看停站、径路与时刻；跨天按 t日/t+1日。