Why does the cemetery bulge?

The tombs of ancient kings were covered with mud and turned into mounds, symbolizing a true spirit of imperial power, sharing the same fate with heaven, earth and mountains and truly integrating into nature. Generally, rich people imitate the imperial tomb as a burial place, which is also a kind of burial after death. And the poorest lower class people can only be ordinary small graves. Built in a hilly shape, it is a drum, not a simple imitation, but also has a lot to do with China's traditional thought. Round places and the shape of peaks are also related to feng shui. Drum construction is to create a feng shui pattern, not only to respect the dead, but also to use the feng shui pattern to benefit future generations.