Introduction to Moonlight River Sound: Moonlight River Sound is an oval-shaped island to the north of Shuixin Pavilion in the Summer Resort. It was built in the 42nd year of Kangxi reign of Qing Dynasty (1703). The main hall was named "Jingji Shanfang" by Kangxi Emperor Kangxi and was the place where the Qing emperor studied. The Yingxin Hall at the back of the house was also the study room of the Qing emperor; behind the hall is the "Hushan Painting". To the southwest of the main hall is the "Lengxiang Pavilion" inscribed by Qianlong, and to the north of the pavilion is the Xia Qin Pavilion. The lotus flowers here benefit from the spring water of Rehe and do not wither in late autumn, hence the name "Lengxiang Pavilion".