C1250 Food That Was Delivered to Its Mouth

In our ancient legends, things like ghosts... They usually appear during the night and are not seen during the day... It's said that the sun is full of Yang energy during the day, and ghosts are formed from Yin energy. Yang countered Yin energy and ghosts would be destroyed by the sun during the day. No one had ever studied the reason behind this. But it had always been a legend