Explore 2,000 years of East-West exchange in one interactive graph. 32 cities on real coordinates, 21 historical figures, 22 trade goods, 16 events — all connected through 211 relationship edges. 8 animated routes show how silk, paper, gunpowder and Buddhism traveled across continents. Built with Leaflet.js + D3.js v7 + Canvas. Dual-language Chinese/English. All data CC BY-SA 4.0, code MIT — fully open-source.
