Seth vanished from that area leaving behind nothing else but a huge hole on the floor.
The bodies of everyone he had killed, had already been disposed of and he was now, tranquil and calm. His anger was reduced to the minimum and he was already moving towards his next objective.
Since he discovered that one of the reasons the Wu Martial Kingdom as waging war against the Blazing Phoenix Sect, was because of that Skystone mine, he knew that sooner or later Caizhi's father was going to discover that his plans had failed.
His ambitions were dangerously high, risking the life of thousands of people, because of his greed and thirst for resources. However, he had attracted the animosity of a person he shouldn't.