Introduction to the Gu Yun Corridor: The Gu Yun Corridor is the best angle to view the Yimeng Mountains. Standing here, you can see more than 30 large and small Gus in the Yimeng area. They are either majestic or steep. They may be beautiful and have magical craftsmanship, and there are many legends corresponding to them. When Chen Yi moved to Yimeng, he once praised Yimeng's canyons like this: Linyi Meng Yin Xintai, the road turns to the peak and returns to the stone monster; a beautiful scenery, seventy-two canyons are lovely.