Cinnamon is hot and sweet. Indications: kidney-yang deficiency; The door of life is cold and the limbs are cold; Pain in the waist and knees; Impotence and nocturnal emission; Poor urination or frequent urination; Shortness of breath; Edema and oliguria; The door of life is closing; Fire will never return to its source; Dai Yang; Ge yang; And upper heating and lower cooling; Barefoot and cold; Dizziness and tinnitus; The tongue is broken; Spleen deficiency and cold nature; Cold pain in the upper abdomen; Eat less loose stools; Kidney deficiency and lumbago; Cold-dampness arthralgia; Cold hernia pain; Infertility due to palace cold; Dysmenorrhea and amenorrhea; Postpartum stasis abdominal pain; Vaginal gangrene; Or abscesses caused by deficiency and cold will not collapse; Or don't fold after the collapse.