明史
Although Jiao Yu's biography does not appear in the "History of Ming" (1739), Yu was mentioned in Zhao Shizhen's "Shenqipu" (1598 AD), He Rubin's "Binglu" (1606 AD), and Jiao Xu's "Zekelu" (1643 AD). His text "Huolongjing" was reprinted in the 19th century, during the late Qing Dynasty.