《魏书·列传·卷四十四》
天安初年，刘彧的司州刺史常珍奇举汝阳来降朝廷，显祖下诏让殿中尚书元石为都将前去迎降，并招慰淮、汝，派郑羲参预元石军事。
天安初，刘彧司州刺史常珍奇据汝南来降，显祖诏殿中尚书元石为都将赴之，并招慰淮汝，遣羲参石军事。
In the early years of Tianan, Liu Yu's Inspector of Sizhou, Chang Zhenqi, led Ruyun to surrender to the imperial court, and Xianzu ordered that the Imperial Secretariat Official Yuan Shi lead the detachment to greet the surrendering and comfort Huai and Ru, and sent Zheng Xi to participate in Yuan Shi's military affairs.