Tile, also called tile head, is the front end of a tile (also called dripping eaves) at the front end of the eaves of houses, palaces, pavilions and other buildings or the patterned part of its front end. Tile is an important part of ancient architecture, which plays a role in protecting wood cornices and beautifying the roof outline. In the Han Dynasty, the craftsmanship of the tile-dang reached its peak, and the decorative themes included four gods, wing tigers, birds and beasts, insects, plants, moiré, figures, moiré and figures, moiré and animals. There is a format in which tiles and breast nails are used to separate the pictures. There are words 1 to 12 in the wording tile, including auspicious words such as "Changle is not ended", "eternal life is not ended" and "infinite heaven", and some indicate the name and purpose of the building.