The disciples of the blood slaughter sect all used killing intent when they cultivated. The cultivation techniques they cultivated were also related to killing intent. Therefore, when they cultivated, their bodies were usually filled with killing intent. If they cultivated with other sects, just the release of their killing intent would affect the others.
When the disciples of the blood slaughter sect cultivated, they would stay far away from each other. If they were too close, their killing auras would affect each other and they might even suffer from Qi deviation. It was because of this that the disciples of the blood slaughter sect would usually have their own separate courtyards and cultivate in a quiet room. The quiet rooms of the blood slaughter sect were specially made and contained something that could suppress their killing auras so that they would not leak out and affect others.
