I can't. It is mentioned in "Operating Rules for Labor Production" that when using a sledgehammer and a hand hammer while standing on a high place, gloves shall not be worn, the hammer handle and hammer head shall not be cracked, and the sledgehammer shall not be near the swinging direction when being hit. Gloves are articles for hand warmth or labor protection, and are also used for decoration. Gloves are very special things, not for practical purposes, but only in modern times have they become necessities for keeping warm in cold areas, or medical antibacterial and industrial protective articles.