The Lan Clan is a prominent family in the fictional world of the novel series Mo Dao Zu Shi (also known as Grandmaster of Demonic Cultivation). Known for their strict adherence to rules and high moral standards, the Lan Clan is recognized for their expertise in cultivation and their mastery of the Lan Sect's unique techniques. They are often depicted as calm and composed, valuing discipline and order. The clan is headquartered in the Gusu region, where their iconic Cloud Recesses serve as a sanctuary for cultivation and learning. Members of the Lan Clan are easily identified by their blue robes and are known for their commitment to justice and righteousness, often taking on the role of peacekeepers in the world of Xianxia.