During the Later Liang (907-23 CE), a traveller from Qingzhou encountered a gale while crossing the sea. Blown to a very distant place, when he looked into the distance he could make out mountains and rivers and a walled city. A veteran sailor told him: “We have been seized by the wind. I have never been here before, but have heard that the realm of the spirits is in these parts. Could this be it?” After a little while, their boat reached land, so he climbed onto the shore and set off towards the settlement. The houses and residences, fields and plots showed no difference from those of the Middle Realm. Whenever he saw people he bowed to them, but none of those people seemed to notice him. When he reached the town walls, there was a custodian at the gates. When bowed to, he likewise failed to respond. He entered the town, and all of the buildings and people were very dark in colour. When he reached the royal palace, a great banquet was taking place, with several dozen of the monarch’s attendants waiting on the feast. Their robes, hats, utensils, musical instruments and furnishings were diverse, but all of Chinese styles. Ke therefore ascended the hall, and approached close to the king’s seat in order to catch a glimpse of him. Suddenly, however, the king fell ill. His retinue held him up and withdrew him from the room, urgently summoning a shaman to make an examination. When the shaman arrived, he declared: “Someone has arrived from a yang region. Their yang energy presses on the people, and this is the cause of the monarch’s illness. They came here inadvertently, without intending to haunt us. They should be sent away thankfully, with food, drink, carts and horses. This is appropriate.” They then supplied wine and a meal, laying out seats in another chamber. The shaman gathered the group of ministers, and all made prayers and offerings, and Ke ate accordingly. Shortly after, a coachman arrived driving horses.  Ke then mounted a horse and returned, arriving at the shore and boarding the ship, the people of that realm never once having caught sight of him. They caught a favourable wind once more, and managed to return home. At that time He Dejian was military governor of Qingzhou, and was close to Weibo’s military governor Yang Shihou, so sent this Ke to serve Wei. He told Shihou his tale, and Fan Xuangu from Wei heard it in person and informed your servant.
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), viii, 353.2795-96:
朱梁時。青州有賈客泛海遇風。飄至一處。遠望有山川城郭。海師曰。自頃遭風者。未嘗至此。吾聞鬼國在是。得非此耶。頃之。舟至岸。因登岸。向城而去。其廬舍田畝。不殊中國。見人皆揖之。而人皆不見已。至城。有守門者。揖之。亦不應。入城。屋室人物甚殷。遂至王宮。正值大宴。君臣侍宴者數十。其衣冠器用絲竹陳設之類。多類中國。客因升殿。俯逼王坐以窺之。俄而王有疾。左右扶還。亟召巫者視之。巫至。有陽地人至此。陽氣逼人。故王病。其人偶來爾。無心為祟。以飲食車馬謝遣之。可矣。即具酒食。設座於別室。巫及其羣臣。皆來祀祝。客據按而食。俄有僕夫馭馬而至。  客亦乘馬而歸。至岸登舟。國人竟不見己。復遇便風得歸。時賀德儉為青州節度。與魏博節度楊師厚有親。因遣此客使魏。其為師厚言之。魏人范宣古。親聞其事。為余言。出稽神錄