《明史·列传·卷一百三十二》
过庭训发布文书到蓟州调查，知州戚延龄详细说明张差疯癫前后的情况，说： 贵妃派太监营建佛寺，太监烧制砖瓦，居民有很多卖柴从中获利的。
庭训遂移文蓟州踪迹之。知州戚延龄具言其致癫始末，言： 贵妃遣珰建佛寺，珰置陶造甓，居民多鬻薪获利者。
Guo Tingxun issued a document to investigate Jizhou. The prefectural governor Qi Yanling gave a detailed account of the situation before and after Zhang Cha's madness, saying: The imperial concubine sent eunuchs to build a Buddhist temple. The eunuchs burned bricks and tiles, and many residents sold firewood to make profit.