《明史·列传·卷一百一十一》
皇帝命令建造鏊山灯，估计要耗费三万多两白银，又命令在长信门建造光泰殿、瑞祥阁，朱衡都上奏劝阻了。
命造鳌山灯，计费三万余两，又命建光泰殿、瑞祥阁于长信门，衡皆奏止之。
The emperor ordered the construction of the Aoshan Lantern, with an estimated cost of over 30,000 taels of silver. He also ordered the construction of the Guangtai Palace and the Ruixiang Pavilion at Changxin Gate. Zhu Heng advised against all of these.