The main contents of the banana fan borrowed from the Monkey King in The Journey to the West.
There are four Tang Priests and Mentors, all the way west. Walking, I gradually feel unbearable heat. It's autumn, and everyone feels very strange. I didn't know there was a burning mountain in front of me until I asked, and there was nothing growing within 800 miles of Fiona Fang, Fiona Fang. From the mouth of the boy selling cakes, if you want to cross the mountains, you can only use the banana fan of Princess Iron Fan to put out the fire. The Monkey King arranged for Master to go to the Bajiao Cave to find Princess Iron Fan. Princess Iron Fan is Niu's wife and Hong Haier's mother. Because Hong Haier wanted to eat Tang Priest's meat last time, he had a grudge against Wukong, so Princess Tiefan refused to borrow it. The first time Wukong borrowed a fan, Princess Iron Fan used a banana fan. Bodhisattva Ji Ling learned the truth and gave him a "Ding Fengdan" to borrow a fan. Wukong came to borrow a fan for the second time, and the princess slapped him again. Wukong's mouth was full of Ding Fengdan, and he didn't move. The princess hurried back to the cave and stayed at home. Wukong turned into a bug and entered the princess's stomach when Tiefan was drinking tea. The princess had unbearable abdominal pain and promised to borrow a fan, but she gave a fake fan. The third time, Wukong became Niu Wangmo, which was a real trick. When the cow came home, she learned the truth and hurried after it. Wukong fought with the cow. Bajie and Friar Sand came forward to help and finally beat Niu Wangmo to his true colors. Wukong put out the mountain fire with a banana fan, and the four of them continued to travel west to learn from the scriptures.