How do geography teachers choose a date to evaluate classes?

Whether to fill the dragon or help the mountain. According to the query of personal library network.

1. Whether to fill the dragon: When evaluating the day class, it depends on whether the earthly branch in the day class is the moon position of the immortal, the official position, the emperor or the dragon tomb.

2. Whether to help the mountain or not: The five elements of the day shift are called Shengshan Gefushan, and in the study of day selection, Fu Sheng and Wang Fushan are collectively called Fushan.