In this silent and desolate mountain forest, a cave lay hidden, with a few strands of withered vines hanging at the entrance, pushed by the wind to collide against the rock wall, emitting a soft "shasha" sound, like someone grinding their teeth in the dark.
Deep within the cave, there were ghostly green flames flickering, casting strange lines on the stone walls, sometimes twisting like a snake, sometimes condensing into fierce ghostly shadows, as if trying to crawl out of the stones, eerie and sinister.
Before long, those ghostly green flames suddenly flickered, as if abruptly extinguished, plunging the entire cave into darkness. After a while, a small point of candlelight gradually rose again, only this time the candlelight had turned bright yellow, and the twisting shadows on the walls had disappeared.
Soon, a voice came from inside.
"What's going on?"
"Why did the casting break off?"
