In traditional Chinese culture, foxes were not always synonymous with fairies. Their original meaning was different from the current meaning. In ancient texts such as the Classic of Mountains and Seas, foxes were described as auspicious animals and were believed to bring good luck. Foxes were also known as "nine-tailed foxes" because nine-tailed foxes were considered very noble and sacred animals. There was a legend of "nine-tailed fox fairy". As time and culture changed, foxes gradually changed and became synonymous with fairies in some novels. This was because in the process of writing some novels, the author would portray the fox as a demon with different characteristics and attributes according to his own imagination and creative needs. The image of the demon may be different from the fox in traditional culture, but it was shaped according to his own imagination and creative needs.