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Sayyid Ajjal is the ancestor of many Muslims in areas all across China. Andone of his descendants is the famous Navigator of Ming Dynasty, Zheng He, wholed the largest armada in the world of 15th century. The origin of SayyidAjjal's family remains unclear although many studies have been done on thistopic of Muslim history. In this paper, we studied the Y chromosomes of hispresent descendants, and found they all have haplogroup L1a-M76, proving asouthern Persian origin.

Present Y chromosomes support the Persian ancestry of Sayyid Ajjal Shams al-Din Omar and Eminent Navigator Zheng He