Empress Xu (1362 - July 1407), formally Empress Ren Xiao Wen, birth name Xu Yihua), was the third empress of the Ming Dynasty from 1402 to 1407. Her husband was the Yongle Emperor. She was well educated, compiling bibliographies of virtuous women, an activity connected with court politics. Empress Xu is also the first person credited with transcribing a Buddhist sutra from a dream revelation. The work is entitled 'The sutra of great merit of the foremost rarity spoken by the Buddha which the Renxiao empress of the great Ming received in a dream'). In her introduction to the sutra, the empress wrote that one night after meditating and burning incense, Guanyin appeared to her as if in a dream, and took her to a holy realm where the sutra was revealed to her in order to save her from disaster. After reading the sutra three times, she was able to memorize it and recall it perfectly upon awakening and writing it down. The sutra conveys conventional Mahayana philosophies, and the mantras for