As there is no sunshine at all, the window only has the function of ventilation. It is recommended to make curtains and cover the windows as much as possible. Then, the indoor lights should be lit, and more fluorescent lamps should be installed to make the lights shine like sunshine.
3. It is suggested to look for Wenchang position in the room, and try to light a nightlight at that position, which is open day and night. Now there are LED lights, which are very energy-saving and can be applied.
4. Color the walls and curtains of the room to be warm, and try to use white, milky white, yellow, etc. . .