- Chinese: 熊珠
- Pinyin: Xiong Zhu
A pearl that is guarded and cherished by gorillas. Cai Wu Xiong (蔡五熊) is the bearer of this pearl.
It has the power to suppress and eliminate any form of evil entity.
When it resides in the body of a human, it can suppress the evil that lurks inside of him and give him unbreakable skin. However, the former bearer will age to death if the pearl is not returned within a month. To transfer the pearl to someone else, the bearer must share a bond of love with the target. It is this pearl that put an end to the ultimate battle between Hei Long (黑龍) and the KO fighters.