Although big roof, incline plane, long overhang eaves and high rake angle are characteristics of Chinese ancient palatial architecture, the lips and beasts are parts sine qua non in roof decoration.

• 大屋顶、斜坡面、深出檐、高翘角是中国古代宫殿建筑的特点,而脊吻、走兽又是屋顶装饰不可缺少的部件。