Day 1: Arrive in Yantai at 5 pm and have dinner at Penglaichun on Huanshan Road. It is a time-honored hotel with the most local characteristics. The Shandong cuisine there is the most authentic, and the fish braised noodles are especially good. Eat and then find a place to stay.
The next day: Drive to Penglai, visit the Polar Ocean World in the morning, Penglai Pavilion in the afternoon, and return to Yantai for dinner in the evening. The Shandong cuisine at Dongshun Garden at the foot of Yantai Mountain is also good. The route to Penglai: go west on South Main Street - go west on Tongsan Expressway to the entrance of the development zone - go north along Hengshan Road - go west on Jialingjiang Road - just go west on Beijing West Road.
Day 3: In the morning, drive to Liugong Island in Weihai to visit the ruins of the Beiyang Navy. Route to Weihai: Go east on South Street - Go southeast on Erma Road - Turn left at Jingouzhai Overpass and go east to Yingbin Road - Go to the beach and turn right on Binhai Road and go southeast - Turn right on Muping District and take the Yanwei Expressway to Weihai Direction - Go to the end of the expressway - Shichang Avenue and go east. When you reach the seaside, you will see the pier to Liugong Island. After visiting Liugong Island, you can go to the Harbor Building and Friendship Shopping Center on the seaside. There are many Korean products inside, so be careful of fakes... Stay in Weihai for the night
Day 4: Return to Yantai, Take a look around Marina Square, Yantai Mountain, and Five-Bedroom Koreatown. Just take a rest and fly out in the evening. I wish you a pleasant stay.
ps: Are you coming to Yantai by plane and bringing a car with you?