《明史·列传·卷一百零四》
琉球中山王派遣使者朝贡，翁正春称： 中山王已归附倭寇，现在的使者多是倭国人，贡物大都是倭国的器皿，断绝与其往来比较好；要不也可以令福建的地方官约略留下一些土产，不要让他们到京都朝贡。 
琉球中山王遣使入贡，正春言： 中山已入于倭，今使臣多倭人，贡物多倭器，绝之便；否亦宜诏福建抚臣量留土物，毋俾入朝。 
The King of Zhongshan of the Ryukyu Islands sent an envoy to pay tribute. Weng Zhengchun said: “The King of Zhongshan has submitted to the Japanese pirates. The current envoys are mostly Japanese, and most of the tribute are Japanese vessels. It is better to sever ties with them. Alternatively, we can have the local officials in Fujian confiscate some of their local products and not allow them to go to the capital to pay tribute.”