Unguja is one of the earliest Swahili towns mentioned in external accounts, besides its identification as Lunjuya by al-Jāḥiẓ (d. 868), its also mentioned in the Arabic Book of Curiosities ca.1020 which contains a map showing the coasts of the Indian Ocean from China to eastern Africa where its included as ‘Unjuwa’ alongside ‘Qanbalu’ (Pemba island). 10 The elites of Unguja were also involved in long distance maritime travel. During Song dynasty china, the african envoy named Zengjiani who came from Zanzibar (rendered Cengtan in Chinese = Zangistân) and reached Guangzhou in 1071 and 1083, is likely to have come from Unguja.¹¹