Lighting belongs to yin fire in geomantic omen, and Ding Huo belongs to yin fire in heavenly stems and earthly branches, so night lighting also belongs to yin fire. Yin fire is not needed by everyone, but beneficial to some people; For others, yin fire is not good, and the more yin fire, the better.
At night, especially in dark places, many Yin Qi usually get together. If there are no lights in these places, when we rush into them, we will be attacked by Yin Qi in the environment. People attacked by Yin Qi usually show weakness and nervousness. Therefore, turning on the light to sleep at night can avoid the influence of Yin Qi on ourselves. In fact, when people sleep, the aura of the surrounding environment is very weak. If you light a nightlight at this time, you can improve the surrounding aura and protect yourself.