Who can tell me some stories or allusions from the Middle Ages in Europe? I am mysterious about that history, but I don't know it.

The story of the "pied piper" in the Middle Ages:

The Painted Pied Piper is purely a fable similar to the folk myth. This folk story is popular because the legend of "The Piper" contains a moral philosophy, so it is also a political fable. According to rumors handed down for hundreds of years, in the year when Hamen City was attacked by rats, a stranger of unknown origin came, dressed in colorful clothes, and he paid in advance to drive away all the rats in the city. The stranger blew his flute, and rats, big and small, followed him to the Weixi River outside the city, all of them drowned. However, ungrateful citizens refused to keep their promises and delayed paying their guests. So, the "pied piper" immediately blew the flute, and 130 children from other families in the city followed him and headed for Geben Mountain in the east of Hamen City, where the earth cracked and innocent children were swallowed up.

Research experts point out that the story of "The Piper" is wonderful, and this unfortunate ending makes this folklore more attractive. The purpose of this legendary story is to remind future generations of the moral norms of valuing credit and not being ungrateful, and to satirize those hypocritical gentlemen who only talk but don't do it. It is not based on real people in history. Like many ancient legends in European and American literary works, the story of "Painted Pied Piper" has also become the material created by many later literati.