Mianshan in Jiexiu-Yungang Grottoes-Wutai Mountain-Beijing. How about a four-day guidebook? How to arrange accommodation?

Take the train from Beijing to Taiyuan on the first day (the best time to arrive in Taiyuan is around 7: 00 am), then take the bus to Jiexiu, get off at Jiexiu Expressway exit, and then take a taxi to Mianshan (about 10 am). Stay in Mianshan for 4 hours, preferably 14 and return from Mianshan. The time to return to Taiyuan is about 17. Buy a train ticket to Datong (train K112, 17: 55, or buy it in advance), arrive in Datong in 6 hours, and then check into a nearby hotel. Go to Yungang early the next morning. Yungang has enough time in the morning. You can go back to Datong 12. After lunch, you can take a bus directly from Datong to Wutai Mountain, arrive about 17, and check in and rest. On the third day, Wutai Mountain played for a day. On the fourth day, I returned to Beijing by bus from Wutai Mountain, ending my pleasant journey.

Or you can return to Taiyuan from Jiexiu on the first day 17 and stay in Taiyuan. I will take the train to Datong at about 8 o'clock the next morning, go to Yungang in the afternoon, go to Wutai Mountain from Datong the next morning, and return to Beijing from Wutai Mountain the next afternoon. Anyway, your time is really tight. For reference only.