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Which is More Severe: Wall Knife Sha or Tian Zhan Sha? A Complete Analysis of Impacts and Remedies
Published: 2026/01/16   Author: jinqi   Source: network

In Feng Shui, the "Bida Sha" (wall knife) and "Tianzhan Sha" (heavenly cut) are considered negative factors that affect the living environment. This article will delve into the definitions, principles, constituting conditions, types, adverse effects, and solutions of Bida Sha and Tianzhan Sha, helping readers better understand the differences and impacts between the two.

Definition and Principles of Bida Sha

Bida Sha refers to gaps between the walls around a house, known as "Fengdao Sha" (wind knife). These gaps allow wind to directly enter the house. Because the wind is compressed, its cutting power is enhanced, thereby disrupting the magnetic field inside the house.

Constituting Conditions of Bida Sha

The severity of Bida Sha depends on several factors: distance, the size of the gap, and other constituting conditions. The closer the Bida Sha is to the living area, the greater its impact, and the faster its effects will manifest. Additionally, the smaller the gap, the more severe the impact of Bida Sha. It should be noted that Bida Sha can actually be considered as two Tianzhan Sha, so other constituting conditions are similar to those of Tianzhan Sha.

Differences Between Bida Sha and Tianzhan Sha

Compared to Bida Sha, the impact of Tianzhan Sha is more severe. Tianzhan Sha refers to gaps formed between the walls around a house, which also allow wind to directly enter the house. However, the adverse effects of Tianzhan Sha are more serious than those of Bida Sha.

Solutions for Bida Sha and Tianzhan Sha

For Bida Sha and Tianzhan Sha, the solutions are the same. The negative effects can be eliminated by arranging Feng Shui decorations, moving furniture, or changing the layout of the living area. In addition, soundproofing materials can be added at the gaps, or other blocking measures can be taken.
 

Through an in-depth discussion of Bida Sha and Tianzhan Sha, we have understood their importance in Feng Shui. Although both Bida Sha and Tianzhan Sha can have adverse effects on the living environment, the severity of the adverse effects of Tianzhan Sha is greater. Therefore, we should pay attention to them and take appropriate measures to ensure a harmonious and safe living environment.

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