According to the decoration of modern families, great attention is paid to interior decoration, especially doors and windows, which are more important exits in families. If the door faces the window, it will form a through flow, which will make the room colder.
A window in a building refers to a hole in a wall or roof to let light and air into a room. As early as the Sui Dynasty in China, there were windows that could be opened and closed automatically in the Guanwen Temple in the Wei Zi Palace.