critical
Choose first city and arrival airport
Your first nights drive SIM options, registration workflow, and which metro apps matter. Pick any major entry: Hong Kong (HKG) or mainland hubs (PEK/PKX, PVG/SHA, CAN, SZX, TFU, HGH, XIY, CKG, KMG, and more). Open the airports directory for official operator links. City-level checklists are deepest for Shanghai; planning logic is the same elsewhere.
- Choose first touchdown: Hong Kong (HKG) or a major mainland entry airport (see directory)
- Prefer a hotel for night 1 if you want automatic registration (mainland) or a simple first night
- Note airport/terminal for SIM, Octopus (HK), or local metro/ride-hail apps
- If HKG → mainland on the same trip, budget Customs + transfer; use the HK page for licensed money rails before you cross