In Feng Shui, there are three needles of heaven, earth and people, that is, the three stitches of seam, zheng and zhong. Each has its own use and cannot be used interchangeably. The sky plate looks at water, including the water mouth. The human plate is for looking at the mountains. The land is used to determine the mountain orientation of the Yin and Yang houses. Only when they are in harmony with the Immortal Destiny, and the earth and metal are not in harmony, that is, when they are combined with the heaven and earth, the metal is divided.
Lai Gong's sand-moving technique is used in the external situation of Yin-Yang House. The good and bad luck of the sand corresponds to the good and bad luck of the people in Yin-Yang House! Sand picking is based on the "needle in a person's plate" to judge the position of sand, and its twenty-four mountains and five elements were determined by Lai Gong. What is "sand" in the outer game? In Yangzhai, it refers to buildings, temples, telephone poles, chimneys, big trees, and all tall or large buildings; in Yinzhai, it refers to peaks or large objects.
Quality requirements:
1. The fine aggregate should be hard, clean, and well-graded; the fineness modulus of artificial sand should be in the range of 2.4 to 2.8, and the fineness modulus of natural sand should be in the range of 2.4 to 2.8. The fineness modulus should be in the range of 2.2 to 3.0. When using mountain sand or coarse sand, corresponding test demonstrations should be carried out.
2. During the mining process, fine aggregates should be tested for alkali activity regularly or according to a certain amount of mining. During periods of potential harm, corresponding measures should be taken and demonstrated through special tests.
3. The moisture content of fine aggregate should remain stable. The moisture content of the saturated dry surface of artificial sand should not exceed 6. If necessary, measures should be taken to accelerate dehydration.