As for the role of red in warding off evil spirits, it is deeply inspired by animals in nature: cows are afraid of red, and western matadors use this characteristic that cows are sensitive to red to restrain their brute force. Eagles flying in the sky are most afraid of red, and some people in rural areas have taken advantage of this feature to set up red signs to restrain eagles from attacking poultry. Monkeys are quite taboo and sensitive to red, and "kill chickens and respect monkeys". Monkeys will be frightened, scared, cowering, crazy and aggressive when they see red. Many wild animals are red-shy. When lions are sensitive to red, they are afraid of red. The reason why animals are afraid of red is that they are afraid of "fire".