The Situ (司徒) Surname: From a Zhou Court Office to the Wuyi Diaspora A Name That Was Once an Office The Situ (司徒, Sītú) surname is one of the few office-derived compound surnames (官职姓, guānzhíxìng) to survive from Chinese antiquity — it began as the Zhou-dynasty office of Minister of Lands and Education (地官大司徒, dìguān…