Originally, under Logan's arrangement, the Flying Flow Sect and the Heavenly Sword Sect were bound to engage in conflict. However, the reality exceeded his expectations. They chose to stand by under the instructions of their respective Sect Leaders, swallowing all their anger and resentment.
This led Logan to speculate - the sect leader of the Flying Flow Sect was truly very patient, bearing the loss of one Strong Dominator without much thunder, which was not a common trait. Was it because he had other plans or was he afraid of the Sect Leader of the Heavenly Sword Sect? Logan had no clue about this.
However, since his plan had been bungled, Logan naturally didn't want to lose completely. He decided if the anger doesn't suffice, he would just add more fuel to the fire. If the death of one Strong Dominator was insufficient, adding another one would force the Heavenly Sword Sect to lose control of the situation.