I Come from the Highest Realm

Deep in the ancient and mysterious Kunlun, there stands a mysterious door that will last forever! Walking on the Huangquan Road, crossing the Wangchuan River, stepping on the Naihe Bridge, and holding three living stones, what you come to is the underworld or a strange world. In the 21st century, when Wuwei youth crosses the border, what kind of legend will they leave behind?