《明史·列传·卷二百零三》
不久，孟养长官司的长官思真又被缅甸人掳走了，孟养的部落酋长思远奉着思真的妻子来归附朝廷，朝廷给她颁发了冠带，让她回去守卫本土。后来思远乘乱自己立为宣慰，向朝廷进贡大象和土产。
伏望垂念边民困苦，将云南镇守太监止存一员，另用指挥一员守备镇夷关，驱思陆退归江外，而移腾冲司于蛮莫，并木邦、孟密不得窥伺，乃为万全之策。
Before long, the head of Mengyang's Longguansi, Si Zhen, was abducted by the Burmese army, and Mengyang chieftain Si Yuan came back with Si Zhen's wife to submit to the court, who in turn issued her a crown and sash and instructed that she return to defend her territory. Later, Si Yuan took advantage of the chaos to declare himself Military Commander, and paid homage to the court with elephants and local products.