As soon as Sun Wukong was carried to the mouth of the bottle, the Yin Yang Two Qi Bottle sucked him inside. Once he was in, Sun Wukong looked around and discovered that the bottle was hot all over.
Sun Wukong found that the longer he stayed inside, the hotter it got. He was soon sweating profusely, and the floor gradually began to heat up too. He could no longer keep his footing.
Sun Wukong took out the Golden Cudgel and began striking the bottle, but the temperature around him was too high for him to get close to its sides. He then used the Seventy-two Transformations, hoping to turn into a tiny bug and fly out, only to find the bottle was sealed tight, with no way out.
As time passed, the temperature kept rising, but Sun Wukong still had no solution. He couldn't stay inside any longer, though, or he would soon melt into a pool of blood.
So he scratched his head. As he kept scratching, an idea suddenly came to him. He plucked a life-saving hair from the back of his head and turned it into a tiny drill.
He realized that although the floor was hot, it was nowhere near as hot as the sides. So he took the drill and began boring into the bottom of the bottle. Fortunately, it worked.
Before long, he had drilled a hole through the bottom of the Yin Yang Two Qi Bottle. Sun Wukong turned into a tiny flying bug and escaped through it.
After escaping as a tiny flying bug, Sun Wukong flew to the demon's head and began biting his face all over. The demon's face broke out in bumps.
A short while later, the Third King took out the Yin Yang Two Qi Bottle to