Yao Yuanqi, of Henei, lived close to a mountain forest. His family all went into the countryside to raise their crops, and his seven-year-old daughter was left alone to mind the house. She gradually became thin and emaciated. When her parents asked her about this, the girl told them: “There’s often this man. More than a zhang (c.3.3m) tall, he has four faces, each face having the seven apertures.[1] He calls himself Marshal of the High Heavens, and swallows me whenever he comes, so I come out through his lower end. This has happened several times. He told me: ‘Be sure never to speak of me. If you talk about me you will spend a long time in my belly.’” The family locked their doors and sighed in horrified astonishment. They then moved away to avoid him.
From Lingguizhi.
Li Fang 李昉, et al., Taiping guangji 太平廣記 (Extensive Gleanings from the Era of Great Harmony), 10 vols (Beijing: Zhonghua shuju, 1961), vii, 320.2534:
姚元起
河內姚元起。居近山林。舉家恒入野耕種。唯有七歲女守屋。而漸覺瘦。父母問女。女云。常有一人。長丈餘而有四面。面皆有七孔。自號高天大將軍。來輒見吞。逕出下部。如此數過。云。慎勿道我。道我。當長留腹中。闔門駭惋。遂移避。出靈鬼志
[1] I.e., two eyes, two nostrils, two ears and a mouth.