What is the diffrent between Hohhot and Ulanhot are they in the same city?

I have plan this august I'm going to inner mongolia.. And I have 4 destination genghis khan's mausoleum( baotou ),wudangzhao monastery ( baotou ), gentala grassland ( hohhot ), Dazhao Temple ( hohot ). And I'm coming from shenyang city..

And my questions are
1) How to go to baotou from hohot ? is there any train ?
2) Cause I'll come from shenyang is there any train from shenyang either Hohot or baotou ?
3) do you think 3 days is enough fro cover those sites ??

thank you !