Stone Cassia: It is the shell of the variegated abalone or wrinkled abalone of the family Abalone. Medicinal materials derived from wrinkled abalone shells are oval in shape, 8-12cm long, 6-8cm wide, and 2-3cm high. The surface is grey-brown, with many rough and irregular wrinkles, and obvious growth lines. There are often mosses and calcareous insects. and other appendages, with 4-5 openings at the end, and the openings protrude from the shell surface. The medicinal material comes from variegated abalone shells and is oval in shape, 7-9cm long, 5-6cm wide and 2cm high, with a dark red surface and 4-5 openings at the end.

Calcined Cassia: Generally broken into small pieces, or calcined in a crucible to produce Calcined Cassia. After calcining, the appearance becomes grayish brown and the texture is crisp. It calms the liver and improves eyesight, clears the liver and subdues yang. It is used for dizziness, redness, swelling and pain in the eyes, shading of the eyes, blurred vision, etc.

〖Nature and flavor return to the meridians〗

Salty, slightly cold. Returns to liver meridian.

〖Efficacy〗

1. Calming the liver and subduing yang: It mainly treats hyperactivity of liver yang, dizziness and headache.

2. Clearing the liver and improving eyesight: used for inflammation of liver-fire, redness, swelling and pain in the eyes; or insufficient liver yin, dark eyesight.