I want to play in Shanxi, please give me some advice. . .

You can go to the ecological park of your colleague's house, just in Fenyang, and then go to Mianshan the next day, which is very interesting. Then you can go to Pingyao Ancient City and Qiao Family Courtyard, just these places. Don't spend too much time sightseeing, you didn't see anything when you went. I hope you have a good trip.