There was a unique communication method among high-level sect elders in the Assassin Sect for them to send out information without anyone else knowing. It was a bit like the voice transmission skill, which would be often featured in kung fu novels. It was just that this communication was relatively simple, so if there was anything complex that needed to be conveyed, it would still require them to meet in person.
Craneshadow deeply furrowed his brows. "Sect brother, you ought to know that even if we do quietly kill Tongtian and his men, other sects will come knocking at our front door not too long later, and that won't resolve the crux of the problem we're currently facing."