Jichinsai
When constructing a hall, there is a method called chindanho, where the altar is built without laying a plank. The ground and chindan (altar) are then repaired separately. Sometimes both methods are used simultaneously. A kenbo containing five treasures and seven treasures is buried in the center of the altar, and a flat stone called chinseki is placed on it. The eight directions are then filled with rings, kui, and five balls.