What is Suitable & Restricted?

The core evaluation framework of the Chinese almanac. 宜 (suitable) lists activities favored on a given day; 忌 (restricted) lists activities to avoid. Classical practice derived these from the interaction of multiple celestial factors — Jianchu day type, stellar positions, and branch relationships — not from simplified star ratings. The Xieji Bianfang Shu evaluates each activity independently.

Source: Xieji Bianfang Shu (協紀辨方書), Vols. 9-11