Why is there the custom of eating mutton soup on the solstice of winter?

In fact, eating mutton in the winter of solstice began in Sichuan. On the solstice of winter, Sichuan is used to offering sacrifices to ancestors, and mutton is included in the food for offering sacrifices to ancestors. In addition, the winter solstice belongs to the New Year, so on this day, the younger generation should bless their elders, and students should bless their teachers to worship the winter solstice. Mutton is included in the prepared gifts. In addition, mutton tastes delicious in winter, and it is hot and nourishing, so it is very suitable for eating in winter. Therefore, there has been a custom of drinking mutton soup from winter solstice since ancient times. Now, no matter in the south or the north, during the winter solstice solar term, everyone will drink a bowl of hot mutton soup to celebrate the arrival of winter solstice.