After sword flying became popular, air congestion and accidents occurred frequently. The country established the "Feijian Traffic Management Bureau", with Zhao Tieying serving as the first director. He introduced an air traffic control system, demarcated waterways, set up a "traffic light cloud", and implemented the "Sword Driver's License" exam. When the ancient swordsman refused to fly according to the flight path on the grounds of "sword cultivation tradition", Zhao Tieying ordered: "Activate the 'forbidden air domain' and 'invite' him down. Remember, civilized law enforcement, the entire process is videotaped."
