[World view setting]
- Time setting: The fictional world of orcs is in the early stages of farming civilization, and each tribe maintains its original ecology.
- Location setting: The iron-eating beast tribe is centered on the Bamboo Sea, and is surrounded by different orc territories such as Snake Valley, Xiong Ridge, and Diaoya.
- Basic rules:
1. Orcs can be divided into three states: human form, animal form, and half-animal form. On a full moon night, they will temporarily lose their ability to transform.
2. Female orcs have healing spiritual powers, but they are rare in number.
3. Tribes maintain relationships through barter, and bamboo products are hard currency.
