Note one: doorstones are generally installed in rooms, and their main function is to block water and wind, adding a very important decoration. The installation of the doorpost is mainly the position of the door. If the store is open to the public, it should be installed inside the door. If it is opened in the store, it is installed outside. But we should also pay attention to the terrain here, mainly waterproof and windproof. But generally speaking, it is better to be above the ground of the door.
Pay attention to two points: chamfer when installing the threshold. This so-called chamfer is to grind a bevel, mainly for convenience. Stone is recommended for the selection of door stone. Although there were examples of wood in ancient times, it is not recommended to use wood indoors now because the corrosion resistance of wood is not very strong. It is best to use granite as stone. Because compared with commonly used marble, granite has higher hardness, and it can withstand trampling and is not easy to wear.