Given the prominence of homoerotic relationships in both Chinese literary fiction and historical records from the Imperial era, it is not surprising that Imperial era scholars have written non-fiction works specifically dedicated to the topic of homosexuality. A few of these are listed below:
《龙阳逸史》 was published in 1632 (Qing Dynasty). Its subject matter is the homosexual social scene at the end of the previous dynasty (Ming).1 The once-banned book describes the lives of male prostitutes in vivid detail.2
《情外类》 is the chapter in 《情史》 The History of Passion exclusively dedicated to male-male relations. 《情史》 is a collection of stories about lust and love from ages past. It was compiled by 明代著名文学家冯梦龙 Feng Menglong, a famous author from the Ming Dynasty . 《情史》 is also known as 《情史类略》 or 《情天宝鉴》.1 Its content is drawn from both historical and fictional sources. The men listed in 《情外类》 include both commoners and nobles. Some well-known examples are Lord Anling, Lord Longyang, and Dongxian - famous male favorites of old.
《断袖篇》 is part of the 《香艳丛书》 Fragrant and Bright-colored Series. 《香艳丛书》 is a sex encyclopedia of 335 subjects compiled by 张廷华（知虫天子） Zhang Tinghua (alias Zhicong Tianzi) of the Qing era. The series comprises of 28 volumes and 80 chapters. Article 198 in Volume 9 is "The Broken Sleeve Essay", which lists 50 or so famous homosexual affairs/individuals from Chinese history.1Examples include 邓通 Deng Tong, a male favorite of the Han Dynasty; 向魋 Xiang Tui, a male favorite of 宋恒公 King Heng of Song State; and the affair between 襄城君 the Lord of Xiang City and one of his retainers.2
《咏怀诗》 is a collection of poems written by the famous Three Kingdoms-era poet. 阮籍 Ruan Ji （210-263 A.D.）. The poems recall the romance of an earlier time, the Warring States Era.（475-221 B.C.） 1 The third poem of the series is dedicated to the praise of the homosexual favorites of old - Lord Long Yang and Lord Anling2: