I want to go to Qinhuangdao for three days and ask for detailed routes and accommodation suggestions.

You should get off at Shanhaiguan or Beidaihe to buy a ticket. Qinhuangdao is under construction! As said upstairs, Yanda Hotel is actually a good choice, because if you live here, first of all, Yanda is also your scenery. Of course, as long as you come back to visit in the evening, the Yanda campus is very large, and the prices and services here are OK. The most important thing is that it is convenient to go to Beidaihe or Shanhaiguan from here. If you live in Beidaihe, you can take bus No.34 to the seaside bus station, and then go to Tiger Stone Park, Pigeon Nest and Nandaihe Entertainment Center. It is also convenient to go to Shanhaiguan. 34, 6, 12 You can go to Sidaoqiao, then turn to No.33, and you can go to Ledao, Jiao Shan, Yansai Lake, Zushan, Laolongtou and so on. Yuedao and Liangshan are suitable for young people, while other older ones are ok. Finally, I would like to add that there is an Olympic Sports Center near Yanda, and there is a new Olympic Underwater World. You can also visit it! I hope I can help you!