How to measure the size of doors and windows: half a foot

Lu Banchi, also known as "Lu Banchi" and "Lu Banchi", is a measuring tool used in building houses, similar to the ruler used by craftsmen today. Lu Banchi, about 42.9 cm long, is said to have been made by the Lu public transport class in the Spring and Autumn Period.

Lu half a foot is only used to measure feng shui. The real measurement size is a tape measure or a more accurate laser rangefinder.