Ancestor Zhang You is a historical military strategist whose tactics are referenced in the text as a source of strategic wisdom. The tactic of nurturing threats for self-importance is attributed to him, which involves creating enemies within one's control when none exist, causing everyone to unite around the leader for protection. Gavin applies this principle in his management of the Black Well Tribe and the surrounding goblin and Kobold tribes, using the Spirit Crystal Mine goblins as a controlled threat to unify the Kobold tribes under his leadership. The reference to Ancestor Zhang You suggests that Gavin's strategies are rooted in established military doctrine.
