In general, China has very clear and simple metro stations, train stations and airports. Everything is clear to people as well. A little bit of attention and there will be no problems.
The stations in China are very organized and clean. There are shops where you can buy food and water for affordable money. There is always enough place to sit for those waiting for the train. And of course, the presence of boiling water at the station and trains is surprising.
Conveniently, there were questions about the transplant, the person was in broken English, but still they explained everything that interested them, a lot of signs that help to navigate correctly.