Yong-le: Year 2, Month 9, Day 13
16 Oct 1404
The envoy Nai Bi and others, who had been sent by Zhao Lu-qun Ying-duo-luo-di-la, the king of the country of Siam in response to an Imperial letter and the conferral of rewards, presented a memorial expressing gratitude for Imperial kindness. He also offered tribute of elephant tusks, various types of aromatics, rose-water, camphor, mu lticoloured patterned silks, red woven rugs, "bi" cloth and other goods. The Ministry of Rites was ordered to feast the envoys and to send them home. It was also ordered that 44 bolts of patterned fine silks and variegated silks, 1,400 ding of paper money and 100 copies of Ancient and Modern Biographies of Exemplary Women be conferred upon the king. Nai Bi also requested that weights and measures be conferred upon them, so that the people of the country could long respect the standards. This was approved.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 10, page 601