Jia-jing: Year 13, Month 11, Day 7
11 Dec 1534
Previously, when the tribute envoys from the yi in the four directions came to the capital, they were subject to restrictions and only once every five days did the Institute allow them to go out to sight-see and trade. When in residence they were locked in and could not go out. Only in the case of the envoys from Korea and Ryukyu were the measures slightly relaxed, but they were still only allowed out once every five days. At this time, Li Yi, the king of the country of Korea, noted that the five-day restriction was used in the Court's treatment of the lu envoys and that it was shameful for a country where headwear and robes are worn to be treated in the same way as the lu. The Ministry of Rites thus submitted a request and it was proclaimed that the restrictions be relaxed.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 79, page 3695/96