Pass types

Hi, we are planning to travel to CHina next year for the first time. From the passes type I could see above, it is just direct ride e.g. Shanghai to Beijing. We are looking at a pass which allow us to jump on & off trains all the way? Just in case if there are any nice cities we could stay for a while there? Pretty much it is like a "greenpass train" in Japan. Does China has something like that for their rail services?

Thank you.