Traveler reports repeatedly treat wallet setup as the first practical China problem, even in easier cities.
Set up Alipay and a backup before flying, then make one small test payment after hotel check-in.
Forum threads often focus on whether Google, WhatsApp, maps, or VPN-dependent work tools behave on the chosen network.
Choose roaming, travel eSIM, or local SIM before arrival, then screenshot hotel and ticket details.
Travelers repeatedly report that English hotel or attraction names are weaker than Chinese names, addresses, and landmarks.
Save the hotel name, full address, nearest landmark, and phone number in Simplified Chinese.
Recent rail reports highlight manual or staffed handling for foreign passports.
Keep passport, ticket, and booking screenshot together until boarding or station exit is complete.
Nanjing often gets squeezed into Shanghai-side routes.
Choose overnight or a focused day rather than forcing multiple historical sites between trains.