You've just landed in Shanghai — one of the most sprawling, electrifying cities on the planet — and the airport exit ramp dumps you in front of a metro map with 20 colour-coded lines snaking across a grid the size of a small country. Most first-time visitors freeze right there. The Shanghai Metro is genuinely massive, but it is also one of the most logical, foreigner-friendly transit systems in Asia. Once you understand how four or five key lines work, you can reach almost every sight on your list without ever touching a taxi app.











