There are direct express trains in summer vacation and tourist season. Now this season, you can only take bus No.22 or No.5 from Beidaihe Railway Station to Haibin Bus Station, and then transfer to bus No.34 to get off at Yanshan University Station. About an hour. In my experience, taking the No.5 bus is faster than taking the No.22 bus. If you are in a hurry, you can carpool with others when you get out of the train station, and you will probably go to 20 yuan alone. It costs three yuan to take a bus.
Yanda takes bus No.34 to the pigeon's nest.