What does Red Evil Day mean?

Tujia people believe that 1, April, July, 10, chicken day in winter and ox day in March, June and September are all "red evil days", and it is forbidden to travel far away. There is a saying that "when you go out, you will encounter red evil spirits, and you will never return." When people go out to visit relatives and friends or do business, the first person they meet is a woman. If they meet, they shouldn't go out until the next day. If the first person you meet is a man and the second is a woman, don't shy away.