 Islam was also well @-@ established throughout China , with a history said to have begun with Sa 'd ibn Abi Waqqas during the Tang dynasty and strong official support during the Yuan . Although the Ming sharply curtailed this support , there were still several prominent Muslim figures early on , including the Hongwu Emperor 's generals Chang <unk> , Lan Yu , Ding <unk> , and Mu Ying , as well as the Yongle Emperor 's powerful eunuch Zheng He . 
