The grey exterior bricks are embedded in the structure in a calm manner, interlacing with the white bricks to form a scene. The light grey resembles the faint clouds in the sky, while the dark grey resembles the light rubbing of a砚台. Despite being of the same long shape, the difference in color tones gives rise to completely distinct textures. 

The rhythm of white and grey flows slowly in the twilight, possessing the simplicity and neatness of modern architecture while also concealing the traditional simplicity and warmth. This wall becomes a container for time and light and shadow, and every inch of its texture is telling the gentle resonance of white and grey.