What is this feng shui?

This strange compass feng shui array, you only took a small piece of ground support plate. This usually appears in big squares or parks and in front of government gates. Belongs to the town character department. Used to suppress feng shui and ward off evil spirits. It has the function of diverging and increasing the gas field. In the park, it is a place to suppress feng shui. Because of the rebellion of some modern political parties, ordinary feng shui places were requisitioned by the state and built into parks or antique buildings. Often government buildings are built in good positions on geomantic omen, and these geomantic omen arrays are used to bless the gas field.