Because they use the Lv6 Barbarian King’s Token. You can get it by purchasing event packages. Using the token during the event can not only locate the Lv6 barbarian castle but also directly increase the points. After the event ends, the Lv6 Barbarian King’s Token you purchased will not disappear. If you use it after the event, you can get Tactic Scroll, Refining Stone, and other precious items.