Penglaige is one of the four famous buildings in China, known as "Wonderland on Earth" in the world. Legend has it that Baxian lived in the sea here. If you are lucky, you can still see mirages in the sea. Unfortunately, I did not see that the scenery is really beautiful. There is also the boundary between the Bohai Sea and the Yellow Sea in Tianhengshan, which is worth seeing. But the ticket price needs 125 yuan, which is still slightly expensive, and the cost-effective ratio is greatly discounted.