Chapter 15: The Flaming Mountains
The four of them arrived at the Flaming Mountains. This mountain sprayed fire all year round, and no one could pass through. Sun Wukong learned that to extinguish the fire, they had to borrow a Palm-Leaf Fan from the Princess Iron Fan.
The Princess Iron Fan was the wife of the Bull Demon King, and the Bull Demon King had a grudge against Sun Wukong. So the Princess Iron Fan refused to lend the fan and even blew Sun Wukong 54,000 miles away. Sun Wukong was persistent and asked for the fan three times. The last time, he turned into a small insect, flew into the Princess Iron Fan's stomach, and finally borrowed the fan.
He went to the Flaming Mountains and waved the fan to extinguish the fire. The four successfully passed through the Flaming Mountains and continued their journey west.