Property is the title of unit property. What is the definition of the so-called unit?

First of all, we must clarify the meaning of property, which refers to all kinds of houses and their supporting equipment, facilities and venues that have been built and put into use. Real estate can be large or small, a flat can be a real estate, and a building can also be used as a real estate. The same building can be divided into several real estates according to different ownership. Property includes a variety of formats, such as office buildings, commercial buildings, residential quarters, villas, industrial parks, hotels, factories and warehouses. It can be seen that a flat property can be called a flat property, and the so-called unit can also be called a "suite", which is usually called a single room.