What feng shui knowledge does the Summer Palace have?

Anyone who has read the novel "Notes on Grave Robbery" knows that the design and construction of the royal gardens and tombs in the Qing Dynasty were all completed by the "Shi Lei" family, as well as in history. The Summer Palace is a huge project, which is related to the life of Empress Dowager Cixi, and the construction task naturally falls to Lei's family. Style Lei Jia's skill spread to Guangxu period of Qing Dynasty, and it has spread to the seventh generation of Lei Tingchang. At that time, Emperor Guangxu issued a decree demanding that "Fu and Lu" should be reflected in gardens. Lei Tingchang, the seventh generation descendant of the Lei family, skillfully used his mind to complete the task given by the emperor. He designed an artificial lake and dug it into the shape of a peach. You can't see the whole picture of it on the flat ground, but you can see a big peach when you look down from Wanshou Mountain. The island in the lake connected by the 17-hole bridge is designed as a turtle, and the 17-hole bridge is a turtle neck, which means longevity. As for the word "Fu", Lei Tingchang designed the buildings on both sides of the Buddha Hall in Wanshou Mountain into the shape of two wings of a bat. As a whole, it looks like a bat. Bats and "Fu" are the same, both of which mean blessing. The story of the Summer Palace is still circulating in Lei's family. It is said that when the Qing Dynasty Governor Lei Ting was in charge of rebuilding the Summer Palace. The emperor asked that the words "Fu, Lu Shou" should be embodied in the garden. It is not so simple to design an effect diagram that satisfies the emperor. While he was worrying about the design appearance, an old man suddenly called. The hospitable Lei family invited the old man to stay for one night. When the old man left the next day, he took a peach out of his pocket and put it on the table. At this moment, suddenly a bat just landed next to Shoutao and flew up and down around the table. Such a casual move caused President Lei to think. LeiTingChang a clap forehead, back to the house spread out the drawings, write down the words "Taoshan Shui Bo, fairy bats hold longevity", and design Kunming Lake into the shape of a peach, and design Wanshou Mountain into the shape of a bat.