Why is the geomantic omen of zigzag buildings not good?

Why is the geomantic omen of zigzag buildings not good? The ancients first considered security and defense. Miyagi and ordinary people have adopted the design concept of multiple enclosures. It is really a back-to-back building, with the meaning of double protection and the artistic conception of insurance and reinsurance; If you feel bad, it should be fallacy; It's a fake scholar who learns Zhuge and sings an empty plan. He didn't know whether to live or die, so he had a brainwave.