Beijing to Yantai

There are direct trains and buses between the two cities: it takes around 14h and 20min by train and about 10h by bus. If you wanna use a relative fast way by train or bus, I suggest you take a high speed train to Qingdao in around 4.5h and then transfer to a bus to your destination within 4h.

This website has China high speed railway map for your convenience. You can see that on this link:
https://www.travelchinaguide.com/china-trains/railway-map.htm