Introduction to the eaves of the bluestone tower: The 1st to 4th floors of the tower are made of two pieces of granite facing each other. The gaps between the layers are staggered to ensure the stability of the entire building; the 5th to 13th floors are made of one piece Machined from rock, hollowed out in the middle to relieve pressure. The eaves of the bluestone tower gradually shrink from bottom to top, with roughly the same shape. In particular, each side of the first layer is engraved with three grids of square tiles. The tiles are engraved with patterns such as the Eight Immortals and flowers, and the corners are carved into the shape of a bat, holding different utensils in the mouth.