Yigun, a native of Jiujiang, went to sleep one night, and a woman entered his room. Yigun knew she was a fox spirit, but his lust for her beauty overcame his fear, and he slept with her, keeping the affair secret even from his parents. Before long, Yigun grew thin, his face haggard. When his parents inquired about the cause, he dared not lie and confessed everything. Terrified for their son's safety, his parents ordered the servants to guard his room and hired a Taoist priest to draw protective talismans, yet the fox woman still visited every night, unstoppable.

In a fit of anger, his father decided to keep watch himself, and the fox spirit dared not appear again. However, if anyone else stood guard, she would materialize. Greatly bewildered, Yigun mentioned this to the fox woman, who explained, "Mortal talismans cannot harm me in the least. But though I am a fox demon, I understand propriety; how could I dare to couple with my beloved in his father's presence?" Hearing this, the father became even more vigilant, never leaving Yigun’s side night after night, not an inch apart. From that time on, the fox demon vanished and never returned.

Later, when bandits ravaged the region and villagers fled in all directions, Yigun became separated from his parents and found himself alone in the desolate wilderness of the Kunlun Mountains. He looked around at the bleak landscape, fear gripping his heart. As dusk gathered, a woman approached him face-to-face. He scrutinized her closely and realized it was the fox woman. Reunited amidst the chaos, they were both relieved. The fox woman said, "The sun is setting; please, young master, remain here for now. I will find some land and erect a house to shield us from tigers and wolves."

As she spoke, they walked north, crouching in the dense thickets, engaged in some unknown activity. Soon after, the fox woman returned to their spot, took Yigun’s hand, and headed south. After taking ten paces, she turned north again. Not far before them, a thousand great trees suddenly sprang up, encircling a towering pavilion with bronze walls, iron pillars, and a roof layered in gold foil. Drawing nearer, they saw the walls were shoulder-high, utterly lacking any doors or windows. Every foot, a small aperture appeared in the wall, just large enough for a foothold. The fox woman stepped into the holes and vaulted over the wall; Yigun followed close behind.

Inside the perimeter, the dwelling shone with a splendor that seemed beyond human construction. Yigun inquired, "Such lavish architecture—what is its provenance?" The fox woman laughed. "Ask no more. Simply reside here; after tomorrow, I will gift you this house. With gold and metal worth millions, you will want for nothing in the remainder of your days." Having spoken, she prepared to leave. Yigun pleaded with her to stay. The fox woman sighed, "You were the one who chased me away back then; now you are the one begging me to remain. It truly puts one in a difficult position." Despite her words, she stayed with Yigun for the night.

When he awoke the next morning, the fox woman was long gone. Yigun vaulted back over the wall and looked behind him; there was no house, only a rouge box. Opening it, he found a single finger ring, threaded with four silver needles. As for the thousand trees, they were nothing more than a dense tangle of thorns.