>>1621552I've been to the China Railway Museum near Tiananmen Square years ago but it was fairly underwhelming, from what I recall it consisted mostly of old maps and scale models, I heard they store actual locomotives and rolling stock in another museum somewhere else.
Here's a photo I took in 2013, there's really not much to say about this. Quite honestly I'm not that interested in Chinese railways so this is just my experience as a tourist several years ago.