01 — EXPLORE THE MAP
Choose a unit to synchronize map and related views.历史地图 /Seven research lines
Seven research lines · Select a unit
Select above or on the left. The map and detail view remain synchronized. Only source-backed city nodes are shown.
MAP VIEW / 总览 · 七条主线1937—1945
Map pins: cities supported by sourcesIntercity movement routes are hidden pending verificationFacilities are grouped in each city detail