Sau-Dian-Chi @ Sayyid Shamsuddin @ Sayyid Adjjal Shams Al-Din Omar

Sayid Syamsuddin adalah putera kepada Sultan Bukhara (Uzbekistan) yang dikalahkan oleh Ghenghiz Khan. Sayid Syamsuddin jadi tawanan di Peking @ Beijing. Kerana akhlaknya yang mulia beliau bukan sahaja telah dibebaskan malahan diangkat menjadi penolong menteri di Yunnan.

Sayyid Ajjal Shams al-Din Omar came to China from central Asia during Yuan dynasty, and he was descendant of the king Mohammed of Bukhara in central Asia (part of Khwarzem Shah Empire). Sayyid Adjjal Shams Al-Din Omar was conferred the title "Prince Xianyang 咸阳王" in Yunnan during Yuan dynasty.

Sayyid Ajall was made the Xianyang Prince and Commissioner of Yunnan Field Secretariat during the reign of Yuan Dynasty. He settled down in Yunnan and ended up marrying a local Chinese girl. His descendants later adopted the surname “Ma” which was derived from the name of Syed Ajall’s fifth son, Masuh.