In which direction can the pond be built at the top of turtle hill?

"Guiding Ding" refers to a method of setting dishes in traditional geomantic omen in China, which is used to determine the good or bad orientation of houses. In this method, "Gui" represents the south, "Mountain" represents the north and "Ding" represents the east. Therefore, the "mountain" position in the "Gui" arrangement is north, the "Gui" position is south and the "Ding" position is east. The pond is located in the south, so the direction of the pond should be toward the "mountain" position (that is, the north), so as to obtain better feng shui effect. If the pond is located in the mountains (that is, the north), the direction of the pond should be toward the "decyl" position (that is, the south). If the location of the pond is in the fourth direction (that is, the east), the direction of the pond should be toward the "own" direction (that is, the west), so as to obtain a better feng shui effect.