Xiamen has no pet shipping companies; trains should also be okay. You should first ask at the train station, as quarantine and disinfection certificates are likely required.
When taking the train, the owner must stay with the pet, but both must stay in the cargo carriage.
I have transported my dog by train back home for the New Year. If a friend has a car, it’s best to have the friend drive directly home.
Flying is not very safe and you need to buy a large airline crate. It’s best to contact the airline for details as there are many precautions. Some friends’ dogs have escaped from crates upon landing, which may be due to crate quality or airport handling. Dogs found entering runways are dealt with by euthanasia at the airport.