When it comes to work, there are two kinds, one is spiritual and the other is material:
1, the role of spirit:
Jinjing is a geomantic point to communicate yin and yang.
2, the role of materials:
The actual function of the gold well is to explore the foundation of the mausoleum to find out the engineering geology. The ancients called it "acupuncture", which is equivalent to modern engineering geological drilling.
The excavation depth of the gold well is limited by the geological conditions of the horizontal plane where the underground ground is located. The elevation of the gold well bottom will be used as the basis for the design elevation of the underground layer.
Dig a deeper exploratory well (also called sample pit) behind the gold well to determine and determine the appropriate depth of the underground foundation. In addition, exploratory wells are also dug in the low-lying areas on the two wings of Jinjing.