Cave of Water Curtain is found in Huaguoshan, Lianyungang City. It is well known for its "Journey to the West". Shuiliandong is a natural crevice cave with artificial tunnels leading to the lower platform. There are many precious inscriptions in front of the entrance of the cave. Among them, the "Indian Heartstone House" was a hand book of the Daoguang Emperor in the Qing Dynasty, which was given to the Prince of Shaobao at the time and then to the Ministry of War of the Armed Forces.