What is the scope and distance of geomantic omen?

Guan Yu, a kind of geomantic omen, implies the concept of "key" from its name, and "lock" is paid special attention to by the geomantic omen of the situation school.

Hundreds of feet for the shape, thousands of feet for the potential, the situation gives birth to good or bad luck. Therefore, Jin Suoyu's geomantic omen generally talks about sand and water within the scope of perception.

The Guan Yu-level dragon-seeking cave of Dajinsuo should extend to hundreds of kilometers, and it is an ancient method to find dragons thousands of miles away!