What's the yard in the building? Explain clearly. My teacher didn't explain clearly. Please, master.

1. The patio is in a building, leaving a space in the middle until the roof is not decorated and there is no roof. The rooms are arranged around, standing at the bottom of the patio, and it feels like "sitting in a well and watching the sky".

The bottom of the patio can be located on the ground or on the upper floor, mainly for rectangular venues, where the house is too deep, which is not conducive to lighting and ventilation. The patio was set up to solve the problem of ventilation and lighting in the middle room.

2. The open space and courtyard surrounded by houses or houses and walls in the house are called patios;

3. The holes used for lighting on the roofs of old houses in some areas are also called patios;