According to the Chinese superstition, ghosts, devils can only travel in straight lines, so screen walls are usually placed before residency gates in order to block their paths. This 2.09-meter-thick screen wall and the glaring dragons can no doubt make their penetration difficult. The wall itself is inlayed with components of yellow, green, blue, purple, black and white glaze. On the wall, nine dragons are swirling vividly amid yellow clouds, blue mists, surfing waves and mountain cliffs. Of the nine, the central one, its bright eyes staring firmly into the distance, seems the most dignified and imposing. On seeing this, you may be amazed by the high carving craftsmanship of ancient Chinese people.