Works in every Chinese city. Make a card the driver can read at a glance — big Chinese characters plus a QR code that opens turn-by-turn navigation in Amap (高德地图) when scanned with WeChat, Alipay or the camera. Generate it on hotel Wi-Fi, then keep the tab open: it works offline.
Leave empty and the QR runs an Amap search for the Chinese address (usually enough). For a pinned destination, paste GCJ-02 coordinates from Amap web (right-click a spot → copy coordinates).
Latitude 纬度 / Longitude 经度 (GCJ-02):
Tip: bookmark this page before your trip — it loads without a VPN inside China.