Tugu Man disregarded the Count's phantom's warning and killed Xi Lin outright, extracting his soul. At the same time, the last piece of Xi Lin's defensive equipment was marked with a tracking mark by Tugu Man, which was the final measure of the Count's mansion. In the future, they could use this tracking mark to avenge Xi Lin.
Anyone who killed the son of the Count would be subjected to endless pursuits, but Tugu Man was beyond caring at this point. Even if he had spared Xi Lin, knowing that he used Xi Lin like this, the Count's mansion would not let him go.