There is no sunshine in the living room. Can you make a skylight on the top floor? It's ok to build a window by yourself, but in the city, the house on the top floor can't open the skylight privately. If you want to open a window now, it is recommended to contact the developer to apply. If you have built a house, it is recommended to find a property to discuss the application.
The so-called skylight actually refers to installing a glass window on the roof of the top floor or attic, which improves the lighting effect and ventilation effect of the room and makes it brighter and more spacious.