What is Tianzhu Feng Shui?

The name of this evil spirit is very vivid, like a knife cutting the space in half, and the occupant is exactly where the knife edge passes. To be more specific, there are two tall buildings side by side, with a gap in the middle. The residents at both ends of the gap are affected by the Heavenly Killing Evil. When the year is unlucky, they will become evil, and the Lord will have blood.