《元史·本纪·卷八》
二十八日，高丽国王王忄甚派遣他的枢密副使许珙、将军赵王圭前来祝贺皇上的寿诞佳节。
丙寅，高丽王王愖遣其枢密副使许珙、将军赵珪来贺圣诞节。
On the 28th day, King Wang Xin of Goryeo sent his deputy privy envoy Xu Gong and General Zhao Wanggui to congratulate the emperor on his birthday.