Introduction to Yulan Hall: Built in the southwest of Renshou Hall and facing the Kunming Lake, it is a triple courtyard-style building. The main hall, Yulan Hall, faces south, with the Xiafen Room in the east and the Lotus Pavilion in the west. In the twenty-fourth year of Guangxu (1898), after Cixi launched a palace coup, Emperor Guangxu, who advocated reform, was imprisoned here. It is an important historical site in the Summer Palace.