Being confused, which is your departure and arrival city??

We are senior citizens by age & not by spirit.
We plan to travel across China for about 42 days...through train, flights works out costly.
Pl. answer the following questions,
1) Do Chinese railway offer Travel pass like URAIL pass in Europe ?
2) How to climb steps with luggage to go to various platforms? Do Railway stations have Lift facility?
3) What special facilities are given to Senior citizens? Do they have Golf cart service to take Senior citizens to there (Seat )?
4) Advice whatever deems fir to you.

Thanks.
Mayur Shah