The Legend "Monkey on Duanhong Bridge"
It is said that one of stone lions was once really covered with cloth and this had something to do with a secret in the Forbidden City.
Emperor Daoguang of Qing Dynasty (1644 - 1911) had high expectations for his eldest son named Yiwei, hoping that he could inherit the throne in the future. However, the higher expectation, the greater disappointment. Yiwei made no effort to seek progress, Yiwei was so upset and hated the teacher. One day, he had a quarrel with the teacher and shouted that 'I will kill you if I become the emperor'.
Hearing about this, Emperor Daoguang was very angry and gave Yiwei a firm kicking. Unexpectedly, Daoguang kicked the important part of Yiwei and Yiwei fell down immediately clutching his stomach and passed away a few days later.
Emperor Daoguang felt sorrowful and guilty about this. One day when he passed the Duanhong Bridge, he saw one of the stone lions very much like his son clutching the stomach. The stone lion made him feel even more miserable. After that, the stone lion was covered with cloth as long as the emperor Daoguang passed this bridge.