How can mutton and beef be frozen to make mutton and beef rolls for hot pot restaurant?

Buy fresh beef and mutton, which tastes good and is ruddy after freezing. Use good quality plastic tape to support the meat into a circle, about one foot long and 8.9 cm in diameter. When wrapping, wrap it tightly in an angry place and let the air out with a needle. Tie the wrapped ends tightly, so as not to make them empty, or they will break when cut out, and then put them in the refrigerator until they are hard.