What is the significance of Kunming Lake on the left and Wanshou Mountain on the right of the promenade?

I hope that the Queen Mother will live a long life, and I hope that the Qing Dynasty will live forever.

According to Netease.com, the left side of the promenade is Kunming Lake, and the right side is Wanshou Mountain. The promenade of the Summer Palace is a passage connecting Fushan Shouhai. Wanshoushan changed its name because it hoped that the Empress Dowager would live forever, and because it hoped that the Qing Dynasty would live forever.