Introduction to Juan Yu Tower: Juan Yu Tower is located behind Sansui Hall, facing the big rockery across the pond. It was built in the fifth year of Tongzhi in the Qing Dynasty (1866). The ground floor is called Yangshan Hall, and the upper floor is called Juanyu Tower. The Juan Yu Tower is a winding tower. Climbing up the tower in the rain, with misty smoke and faint mountain light, is like walking into a rainy mountain valley, creating a stunning view of Yu Garden.