Mosaic is one of the oldest known decorative arts, it is a pattern created with small tiles or small pottery. In modern times, mosaics are more of a kind of ceramic tiles. They are a kind of bricks with special existence. Generally, dozens of small bricks form a relatively large brick. It is widely used in indoor small-area floors, walls and outdoor large-sized walls and floors with its small size and colorful features. Due to its small size, the mosaic can make some puzzles and produce a gradient effect.