The belief that breaking a 거울 results in seven years of bad luck is an old superstition with no basis in reality or science. When mirrors break, they can be dangerous due to the sharp glass shards and potential for injury from cuts or punctures. It’s important to handle broken glass carefully by wearing gloves and using tools like dust pans, brooms, vacuum cleaners equipped with a brush attachment designed for picking up small objects (like shattered mirror pieces), safety goggles when cleaning up larger fragments that could potentially fly towards your eyes if disturbed too much during cleanup process etc., before disposal according to local regulations.