Gongwangfu is just on the connecting line between Houhai and Beihai, that is, on the Long Mai, so the feng shui is very good. The ancients used water as their wealth, and they "saw water everywhere" in Gongwangfu. The water of the largest pavilion in the middle of the lake was introduced from Yuquan Lake, and it only went in and didn't flow out, so it was more in line with the saying of Feng Shui to collect money. China's top ten marshals and others all live near Gongwangfu, and they all live very long. It is said that the place with the largest number of long-lived elderly people in Beijing is near Gongwangfu, which is really a treasure trove of geomantic omen.