Huizhou ancient buildings are made of brick, wood and stone, with wooden frames as the main materials. The beam is made of huge materials and pays attention to decoration. The middle part of the beam is slightly arched, so it is commonly known as "winter melon beam". The two ends are carved with flat (Ming Dynasty) or round (Qing Dynasty) patterns, and the middle part is often carved with various patterns, which makes the whole body look magnificent and magnificent. The material used for the column is also quite thick. The upper part is slightly thinner. The pillars of the Ming Dynasty were usually spindle-shaped. Most of them are engraved with patterns and lines, such as beam support, claw column, fork hand, Baquan, sparrow arch (Dingtou arch in Ming Dynasty) and diagonal support. The ingenious combination and decoration of beam frame members make technology and artistic techniques integrate into one, achieving a perfect combination. Generally, beam frames are painted with tung oil instead of colored paint, which is particularly simple and elegant.