The "Red Shoes" incident in Europe refers to an unsolved mystery that happened in the late Middle Ages. One day in 1518, a woman named Sophie suddenly began to dance on her way home. Her dance movements were very passionate and wild. Her movements became larger and larger, as if she was dancing with her life, and she did not intend to stop. Sophie was in the city of Strasbourg, which is now the seventh largest city in France. Located on the northeastern border of France, there have been a large number of residents since the Middle Ages. Eventually, Sophie led 400 people in Strasbourg to dance together. As long as people met the dancing crowd on the road, they could not help joining in, until they died of exhaustion. The fairy tale "The Red Shoes" by Hans Christian Andersen is highly similar to the story of 400 people suddenly dancing in Strasbourg. In the fairy tale, the girl Karen was adopted by a rich adoptive mother. After adopting her mother, she had a pair of very delicate and beautiful red shoes. She found that the red shoes could dance by themselves, but she could control the shoes when she put them on. But Karen often wear this pair of red shoes to go to church, occasionally will wear this pair of shoes to dance, and then Karen met a soldier, the soldier first praised Karen's beauty and the exquisite pair of red shoes, mouth also strangely chanting words, on the way home Karen met an angel, the angel sentenced her to wear red shoes forever dance, until death can stop.Karen this time can no longer control the red shoes, she wearing red shoes through the streets, and even the thorns of the jungle, even if the whole body was stabbed can not stop, finally she asked a hunter to cut off her feet, she finally stopped dancing, but the red shoes with Karen's feet to continue to dance, finally the angel appeared again, will take Karen to the heaven. Although everyone is almost a child when they saw this story of Andersen, but if you read this "red shoes" after adults, you will find that in fact the style of the story is very strange, the plot and ending are very thriller, more like an adult fairy tale."Red shoes" has therefore become one of the inspiration sources of many horror theme films and horror games.