Drawing China's railways from memory

1092 stations, 388 lines, 975 junction stations, 117 non-junction stations... Xing Siyuan at Jinhua train depot of China Railway Shanghai Bureau Group Co Ltd can draw such a nationwide railway schematic map with just two pens, relying on her memory. She started sketching to better assist passengers, especially seniors unfamiliar with apps or travelers needing quick transfers, allowing her to instantly find the best route.