What is the specific impact? It depends on the direction of sitting and the life time of the owner. For example, if the concave position is in the dry position, the owner may have a brain tumor, and if it is in the Kun position, there may be abdominal problems. If it happens to be in a traditional position, or often inspired, or the same as life, the influence will be aggravated. Of course, if there happens to be a venting mode in that position, it may not necessarily have an impact. In short, you can see it in detail.