Locating railings: "The rods and railings" are also used as "stick rod railings". It is a relatively common type of railings. It mainly consists of rods, pillars, slabs, mantles, etc., because the top layer is the search. The rod, so called the "stick bar". The shape of the barrier railing was basically in place during the Northern and Southern Dynasties. The barrier railing was originally made of wood, and later stone railings appeared, but in addition to the material changes, the style basically imitated the rod railing.