Wang Youliang of Poyang, while eating a spicy pig’s trotter, accidentally swallowed a finger-sized bone which stuck in his throat and for several days could not be gulped down. Despite spitting and salivating being painful, he could take a little drink and soup, but his family were extremely worried about him. At dusk, when he was beginning to doze, he saw a scarlet-robed figure approach and tell him: “It is said you suffer from a bone. I have medicine, which is simply the finest southern pengsha.” Awaking, he requested a small piece, held it in his mouth until it dissolved, and then on eating, was able to swallow freely as before. This can be seen as an example of spirits granting their secrets in the aid of others.
Anon., Huhai xinwen yijian xuzhi, 後2.226 (Tale 403):
Yuan Haowen 元好問, Chang Zhenguo 常振國 (ed), Xu Yijian zhi 續夷堅志 (Continued Records of the Listener), and Anon., Jin Xin 金心 (ed.), Huhai xinwen yijian xuzhi 湖海新聞夷堅續志 (Continuation of Records of the Listener with New Items from the Lakes and Seas) (Beijing: Zhonghua shuju, 1986).
 Pengsha 鵬砂 refers to borax, or sodium tetraborate.