Emperor Wen of Sui and Wei Zi.

Seriously speaking, Yang Jian's strength is much stronger than the Monkey King's, but in the Journey to the West, the Monkey King, Master, Pig Bajie and Friar Sand went to the Western Heaven to learn Buddhist scriptures together as protagonists, so the Monkey King has a leading role aura and it is certain to win Yang Jian. But in other earlier texts, the Monkey King was beaten out of the water by Yang Jian, and there were parts begging for mercy.

There are many heavenly generals in Yang Jian, and they are magnificent. The Monkey King said that his magical powers were insignificant compared with them, and it was difficult for one person to stop them. The Monkey King was later arrested in the Arctic Exorcism Institute, Wei Zi Da Di. The Monkey King was very sincere in the presence of Emperor Wei Zi. Yang Jian, the Erlang God, showed great power and was ordered to lead the mountain soldiers. Because the Monkey King stole the fairy wine, and the crime was very serious, he should be beheaded and not allowed to ascend to heaven. However, he has the virtue of living in the Jade Emperor. As long as he got rid of this bad habit after the Monkey King, he could be given a lighter punishment, so the Monkey King went to heaven to worship the Jade Emperor.

If the Monkey King is not the protagonist of the Journey to the West, then according to Yang Jian's magic, it is not a problem to catch the Monkey King. If the Monkey King really confronts Yang Jian, it will be a terrible loss. Yang Jian, Erlang God, really has a prototype. In The Journey to the West, the Jade Emperor is Yang Jian's uncle, while in the list of gods, Yang Jian is Ding Yu's apprentice. In addition to these two identities, there is another saying that Emperor Wen of Sui made great contributions in the construction of Dujiangyan and was regarded as a god by the people.

This shows that Emperor Wen of Sui's status is also lofty. In the Journey to the West, in order to take care of the Monkey King's leading role aura and Yang Jian's stalwart image, the Monkey King won't be defeated too badly, and Yang Jian's image won't be tarnished, so the old gentleman on the throne can only come out to participate. It's like a character has a good image in everyone's mind. In order to highlight another person's strength, you can't highlight another person by discrediting and degrading the image of the original protagonist. This will not be accepted by the public.