The relationship between the six-eared macaque and Sun Wukong in "Journey to the West" is another side of Sun Wukong. There is no difference in the strength between the six-eared macaque and Sun Wukong as if they were copied. The six-eared macaque is just another side of Sun Wukong. In Journey to the West, the Tathagata said something like this: You are all of one mind, but let’s see how the two minds compete. This means that the two of them are actually of the same mind. Sun Wukong is the six-eared macaque, and the six-eared macaque is Sun Wukong, which is just another form derived from Sun Wukong's heart.
Plot details of "Journey to the West"
A huge stone in the Huaguo Mountain of the Aolai Kingdom of Dongsheng China gave birth to a bright stone monkey. The stone monkey later worshiped Subhuti as his teacher. Later, he learned the seventy-two transformations and acquired the ability to reach the heavens, so he took over the mountain and became the king, calling himself the Monkey King. The Jade Emperor sent Taibai Jinxing down to earth to recruit the Great Sage to heaven. Later, the Great Sage made a fuss in the Heavenly Palace because he felt that the official position conferred by the Jade Emperor was too low. The Great Sage was trapped in the alchemy furnace by the Supreme Lord. Forty-nine days later, the Great Sage kicked over the alchemy furnace. Forged into golden eyes and fiery eyes. Seeing that the situation was uncontrollable, Tathagata Buddha suppressed the Great Sage at the foot of Wuzhi Mountain.