Introduction to Cuisu Pavilion: The five peaks of El Ridge in Gongyuan Garden are undulating and connected. Various pavilions are built along the mountain, just like what the poet Wubo described in "Preface to Tengwang Pavilion": "The mountains are towering and green, and the sky rises above them." The artistic conception of "Flowing Dan in the Flying Pavilion, with no ground below" was engraved on the stele "Cui Towering Dan Flow", and later the "Cui Towering Pavilion" was built to highlight its scenery. This pavilion was rebuilt in 1979.