Introduction to the Peak Flying Ferry: There are three stone peaks rising from the top of Douqi Mountain, like a tripod pointing to the sky, about 70 meters high and about 30 meters apart. The three stone peaks are connected only by an iron cable bridge, which is suspended over a hundred feet. Above the deep valley, the mountain wind blew strongly, swaying from side to side and making a rattling noise, adding to the thrill. Therefore, there is an inscription at the head of the bridge: "Flying Immortals can cross it."