An anti pig slaughter edict led to speculation that the Zhengde emperor adopted Islam due to his use of Muslim eunuchs who commissioned the production of porcelain with Persian and Arabic inscriptions in white and blue color.[35][36][37][38][39][40][41][42][43] Muslim eunuchs contributed money in 1496 to repairing Niujie Mosque.[10] Central Asian women were provided to the Zhengde Emperor by a Muslim guard and Sayyid Hussein from Hami.[44] The guard was Yu Yung and the women were Uighur.[45] It is unknown who really was behind the anti-pig slaughter edict.[46] The speculation of him becoming a Muslim is remembered alongside his excessive and debauched behavior along with his concubines of foreign origin.[47][48] Muslim Central Asian girls were favored by Zhengde like how Korean girls were favored by Xuande.[49] A Uighur concubine was kept by Zhengde.[50] Foreign origin Uighur and Mongol women were favored by the Zhengde emperor.[51] Tatar (Mongol) and Central Asian women were bedded by Zhengde.[52] probably studied Persian and Tibetan as well.[53] Zhengde received Central Asian Muslim Semu women from his Muslim guard Yu Yong: 錦衣衛都指揮同知於永致仕。特許其子承襲。指揮同知永色目人，善陰道秘戲得幸於豹房，左右皆畏避之。又言回回女晢潤瑳粲大勝中國，上悅之。時都督昌佐亦色目人，永矯旨索佐家回女善西域舞者十二人以進，又諷請召侯伯故色目籍家婦人入內教之，內外切齒。後上欲召永女入，永以鄰人白回子女充名以入，懼事覺，乃求致仕[54][55][56][57][58][59][60] 你兒干 你兒幹 Ni'ergan was the name of one of his Muslim concubines.[61][62]