 The Chinese Ming Xia emperor Ming Yuzhen's son Ming Sheng was given the noble title Marquis of Guiyi by the Ming dynasty emperor Zhu Yuanzhang after his surrender.Ming Sheng was then exiled to Korea and Zhu Yuanzhang asked the Korean king to treat him as a foreign noble by giving his descendants and family corvée and taxation exemptions.These were granted by a patent from the Korean king which lasted until the invading soldiers in the Qing invasion of Joseon destroyed the Ming family's patents.