Sun Wukong is indeed about to cross the world halfway through a jump, incredibly powerful, and knows the magic that can defeat humans and the gods. You can choose to place a bet to play with the command button below the reel and note your total bet on the center display before rotating the reel.
The Monkey King's cash prize is based on the size of the combination on the reel and the total bet. You can decide to place more money on the reel to increase the size of future rewards, or even push all in with the maximum bet shortcut.