Because this is related to the characteristics of mutton.

Mutton is warm. Mutton can be divided into goat meat, sheep meat and wild mutton. In ancient times, mutton was called lick meat, lick meat and jietou meat. It can not only keep out the cold, but also nourish the body, and has therapeutic and nourishing effects on various deficiency diseases such as cold and cough, chronic tracheitis, asthma due to deficiency of cold, impotence due to kidney deficiency, abdominal pain, physical weakness and chills, soreness of waist and knees, sallow complexion and emaciation, deficiency of both qi and blood, and physical weakness after illness or postpartum.

Patients with summer heat or fever should eat carefully; People suffering from edema, bone steaming, malaria, exogenous diseases, toothache and various heat-related diseases should fast. Red wine and mutton are taboo, and eating them together will have a chemical reaction.