Introduction to the return corridor: The West Garden is the main body of the back garden, and the return corridor is the main building that runs through the West Garden. It is known as the prototype of an overpass in China. The cloister is more than 1,500 meters long and is divided into upper and lower floors. It connects the East Garden, West Garden and residential courtyards together. Even on rainy days, you can enjoy the beautiful scenery of the whole garden.