Nine-Dragon Screen In Beihai Park - Built In 1756, The Nine-Dragon Screen Is About 27 Meters (about 88.6 Feet) Long, 6.65 Meters (about 21.8 Feet) High And 1.42 Meters (4.66 Feet) Thick. It Is Composed Of 424 Seven-color Glazed Tiles That Embossing The Screen. Photo