Chuán[ name] (1) (pictophonetic character. From the wood, there is the sound of tu à n, the original meaning: the log of the roof tile is the same as the original meaning. -"Shuowen" is classified as a lumen rafter by the big palace. -Collection of Zuo Zhuan Huan Gong Fourteen Years. -"Everything is Wrong" There are more rafters than workers and women on board. -Du Mu's "Epang Palace Fu" is not a few years old, with a hundred hectares of land, thousands of pavilions and thousands of sheep's feet. -"Strange Tales from a Lonely Studio Promoting Weaving" (2) Another example is rafters (rafters and small wooden stakes); Rafters (logs and squares for roof tiles) Round ones are called rafters, and square ones are called rafters. Generally refers to the rafters); Pen (large); Rafters (rafters and beams)