Persistent uterine bleeding caused by the accumulation of static blood. It is often due to the failure of static blood to disperse, preventing new blood from flowing through the meridians. The main symptoms include continuous dripping of blood from a fistula, sudden heavy bleeding, dark purple blood with clots, severe lower abdominal pain that worsens with pressure, pain extending to the hypochondriac region or lower back, and relief of symptoms when blood clots are expelled.