Is it illegal for the property to cut down trees and smash network cables?

Not illegal. Illegal behavior, also known as "invalid behavior", is an illegal behavior and also an illegal behavior. According to the illegal nature, it is not illegal for the property to cut down trees and smash network cables. A network cable is a connecting cable that connects computers and computers with other network devices. Commonly used network cables are twisted pair, coaxial thin cable and optical fiber.