Cheng-hua: Year 5, Month 7, Day 29
4 Sep 1469
The Chief Steward Chen Yi, who defended the pearl-beds in Guang-dong, memorialized: "In the fifth month of this year (Jun-Jul 1469), over 10 black ships ( ) sailed to the Qing-ying and Yang-mei beds and stole oyster-pearls. The language of those on the ships was heard and it is thus known that they were Jiao-zhi yi persons. It is requested that Imperial orders be sent to the king of the country of Annam requiring him to prohibit such activities and punish the offenders." The Ministry of Revenue deliberated and held: "It is not possible to send Imperial orders on the basis of the claim that yi words were heard during the theft. The relevant authorities should be ordered to enforce the prohibition." Subsequently, the grand coordinator and censor-in-chief also advised: "When Li Hao, the king of the country of Annam, sends an envoy to the Court to offer tribute, the envoy should be ordered to carry Imperial orders back to instruct the king."
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 42, page 1373