《资治通鉴·宋纪·宋纪四》
三月，癸亥，北燕王冯弘派大将汤烛前往北魏进贡。借口太子冯王仁有病，所以没有派他来魏国。
三月，癸亥，燕王遣大将汤烛入贡于魏，辞以太子王仁有疾，故未之遣。
In March, gu亥 day, the King of Northern Yan, Feng Hong, sent general Tang Zhu to the Northern Wei to pay tributes. With the excuse that the crown prince, Feng Wangren, was sick, he didn’t come to Wei.