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 Yuqun, Lan Yu, Ding Dexing, and Mu Ying, as well as the Yongle Emperor's powerful eunuch Zheng He. Mongol and Central Asian Semu Muslim women and men were required by Ming Code to marry Han Chinese after the first Ming Emperor Hongwu passed the law in Article 122.