In the seventeenth century, monkeys were often infested at the bridgehead of Heidelberg, and they kept saying hello to passers-by like their masters. A poet wrote the poem when he saw the scene. Later, according to the story of the monkey, the bronze monkey sculpture was erected at the old bridge in Heidelberg, and the sculptor carved the poem next to it. It is said that touching the fingers of the copper monkey will return to Heidelberg, touching the mirror in his hand will bring wealth, and touching the mouse next to it will give birth to more children.