A Ch'ing Shih is a Kuei-Jin too much aspected to Yin. They are very common in the Green Court of Korea.

Ch'ing Shih are outright monstrosities and cannot pass as ordinary humans in any way. The Cathayan's flesh turns a sickly gray, while her bones turn jet black. Her skin wrinkles and compresses around her bones. Her fangs grow long and drip venom, and black spikes jut from her back, joints, and rib cage. Her entire body glows phosphorescently and sparks with Yin energy.

With the use of the Bone Shintai, a Kuei-jin can assume the Ch'ing Shih for a limited period of time.