Foreign origin Muslims adopted the Chinese character which sounded the most phonetically similar to the beginning syllables of their Muslim names – Ha for Hasan, Hu for Hussain and Sa'I for Said and so on. Han who converted to Islam kept their own surnames like Kong, Zhang. Chinese surnames that are very common among Muslim families are Mo, Mai, and Mu – names adopted by the Muslims who had the surnames Muhammad, Mustafa and Masoud. [citation needed]