In Nanzhong there is the Xuanxian place for offerings, at the foot of a steep and rocky precipice, and at the top of that is a stony grotto cave. Tradition has it that this was the residence of supernatural beings, and at times it is shrouded and hidden by clouds and mist. Students of the Way often built houses beneath it, and would see an immortal manifest before them, saying: “Every year on the Zhongyuan day (the Ghost Festival; the fifteenth day of the seventh month), you should select a person of virtuous conduct at the altar, and they will then ascend as an immortal.” At this all of those who studied the way and admired immortals gathered together there. When the time came, people from near and far congregated beneath the altar, holding incense, gazing at the cave mouth and praying. Afterwards, a person of moral virtue was selected from among the crowd, dressed and capped spotlessly, and stood still on the dais for a long time, eventually ascending, at which the remainder were all left dejected, saying goodbye and leaving. Then a multi-coloured auspicious cloud gathered, extending from the cave over to the altar. The virtuous person, robe and hat quite still, rode the cloud and ascended to the grotto’s entrance, where a great scarlet lantern guided their way. The spectators without exception wept and snivelled in admiration and envy, gazing into the distance and making obeisance. This continued for several years, and none were chosen whose lack of virtue or destiny in the Way provoked resentment.
The next year, the crowd chose someone of great age, and just as he ascended, a person of the Way said that he had come from Wudangshan to take up residence at a monastery, and asked what was going on; everything was explained to him. The monk sighed in admiration of this, and said: “Ascension as an immortal, now,  who would have thought it could be so easy? In the void there must, however, be noble spirits among the strong celestial winds, and one must be able to intercept them. I have a token which can protect against this; please place it on your chest, and be careful not to lose it.” The virtuous one placed it on his chest, and was delighted. When the time came the multi-coloured cloud wound around his feet, and he gradually ascended.
The following day, the monk sent his people to the edge of the cliff, in order to look into the cave. There they saw the levitated person lying emaciated and haggard as if suffering from serious illness, breathing with difficulty and eventually just about able to speak. When questioned, he said: “Just as I reached the cave mouth, I caught sight of a huge python, spitting a haze that became clouds, with two eyes like fires. Just as it opened its jaws, intending to swallow me, there came a sudden quaking of wind and storm, striking it dead at the edge of the cavern.” When they looked, it was a python of several arm spans around, dozens of zhang (3.3m) in length. Moreover, there were skeletons piled up around the cave, which were the bones of the levitated people. The multi-coloured cloud was the python’s poisoned breath, and the scarlet lantern its glowing eyes.
Anon., Huhai xinwen yijian xuzhi, 後2.259-60 (Tale 471):
南中有選仙道場，在一峭崖石壁之下，其絕頂石洞穴，相傳以為神仙之窟宅，時有雲氣蒙藹。常有學道之人築室於下，見一仙人現前，曰：「每年中元日，宜推選有德行之人祭壇，當得上昇為仙。」於是學道慕仙之人咸萃於彼。至期，遠近之人齎香赴壇下，遙望洞門祝禱，而後衆推道德高者一人，嚴潔衣冠，佇立壇上，以候上昇，餘皆慘然訣別而退。於時有五色祥雲油然，自洞而至壇場。其道高者，衣冠不動，躡雲而昇至洞門，則有大紅紗燈籠引導。觀者靡不涕泗健羨，遙望作禮。如是者數年，人皆以為道緣德薄，未得應選為恨。至次年，衆又推舉一年高者，方上昇間，忽一道人云自武當山來掛搭，問其所以，具以實對。道人亦嗟羨之，曰：「上昇為仙，  豈容易得？但虛空之中有剛風浩氣，必能遏截。吾有一符能禦之，請置於懷，慎勿遺失。」道德高者懷之，喜甚。至時果有五色祥雲捧足，冉冉而昇。踰日，道人遣其衆緣崖登視洞穴，見飛昇之人形容枯槁，橫卧於上，若重病者，奄奄氣息，久方能言。問之，則曰：「初至洞門，見一巨蟒，吐氣成雲，兩眼如火，方開口欲吞啗間，忽風雷大震，霹死於洞畔。」視之，蟒大數圍，長數十丈，又有骸骨積於巖穴之間，乃前後上昇者骨也。蓋五色雲者，乃蟒之毒氣也；紅紗燈籠者，蟒之眼光也。
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).