What is the grain brick for?

Faceted tile is a kind of cover covering the front of tile in ancient buildings in China.

Faceted bricks are used in high-standard buildings such as palaces, government agencies and temples. To protect the eaves, they are highly decorative. Patterns can be roughly divided into eyebrows, eyes, nose and mouth. Beards and cheek muscles are used as facial decorations, and some people's facial patterns are accompanied by brow decorations, which are abstract and vivid. Ceramic tiles have various patterns and styles.