The senior official Gentleman Yan Heng resided with his household in Yangzhou. His wife, the Lady Yang, was sitting together, in broad daylight, with their sons and daughters in the hall when thunder and rain suddenly burst forth, and a strange apparition fell from the empty air onto the floor. A little over three chi in height (i.e., about a metre), its face and flesh were both black, and it wore a turban on its head, like the head-cloths of the present day, but as if it were made of flesh, this was joined to its forehead. Turning to look at the people, it covered its face as if in laughter. Before long the crowd grew more and more numerous, but its laughter continued without pause. After a moment, a great thunderbolt erupted outside, thick clouds bringing sombre darkness so people could not be distinguished from one another, and it quickly climbed the empty air and departed.
Hong Mai, Yi Jian Zhi, ii, 7.421:
Hong Mai 洪邁, He Zhuo 何卓 (ed.), Yi Jian Zhi 夷堅志 (Record of Yi Jian) 4 vols (Beijing: Zhonghua shuju, 1981)