《元史·列传·卷四十一》
朝廷有人提出在东南海口辛桥地方开河，连接滦河，以便运粮至上都。君祥奉旨与中书右丞阿里去考察利害得失，回朝后极力说此议不妥，也就不再提起开河之事了。
议者欲自东南海口辛桥开河合滦河，运粮至上都，奉旨与中书右丞阿里相其利害，还，极言不便，罢之。
Some people in the court suggested opening a river at Xinqiao in the southeastern estuary of the sea, connecting to the Luan River, so as to transport grain to Shangdu. Junxiang was ordered to go with Ali, the Right Deputy of the Central Secretariat, to investigate the pros and cons. After returning to the court, he strongly argued that the proposal was improper. Therefore, the matter of opening the river was not mentioned anymore.