Not allowed, the high-speed train has regulations.
If you really want to bring
1. At least one week in advance, go to the nearby veterinary station to get rabies vaccine and triple vaccine for cats, and obtain a vaccination certificate (if you already have a vaccination certificate, you can skip this step)
2. One or two days in advance, not too early, at most two days before, bring the pet and the vaccination certificate to the nearby veterinary station (approved by the railway department) for
a physical examination, obtain a health certificate and then exchange the health certificate for a
3.
One day in advance, bring the pet to the railway veterinary station (animal quarantine station) to get a stamp.
4. On the day of the train, 2-3 hours in advance, bring the pet, put it in a special airline box (you can make an iron cage yourself, but containers like cardboard boxes are not allowed),
go to the cargo consignment station at the train station to handle the consignment formalities. If the previous procedures are complete, the procedure is very simple, just show the immunization certificate, the exit quarantine certificate,
and the train ticket of that day, then get a form to fill out, weigh, and pay fees (fees are unclear, not handled by yourself), reportedly it doesn't cost much
5.
After completing the certification, the person cannot leave, must accompany the pet until entering the freight carriage together and settle the pet properly, of course the person
can return to the carriage they are riding in to sit.
6. After getting off the train, go to the arrival station to pick up the pet with the delivery note. Note: Do not feed the pet four hours before going out.
It really makes the pet suffer.
So, if you are afraid that something bad might happen to the pet during the high-speed train journey, remember to give the pet some sedatives, because allowing pets on the high-speed train is also to avoid affecting other passengers.
It seems you really love your dog.