Why did The Journey to the West demonize Ananda Ye Jia?

Because Ananda Ye Jia is not the leading role, it doesn't matter to denigrate these two people.

The play tells the story of the Monkey King, Pig Bajie and Friar Sand who assisted Xuanzang, a monk of the Tang Dynasty, to go to the Western Heaven to learn Buddhist scriptures, and the four of them took risks all the way to subdue the demon. After eighty-one difficulties, I got back the true scriptures and finally made a positive result.

abstract

There is a fairy stone on the top of Guo Hua Mountain on the seashore of Ole County, Dongsheng Shenzhou. One day, the fairy stone burst and became a stone monkey. This stone monkey is both sensitive and clever. He made friends with monkeys and found a good place to settle down in water curtain cave. The monkeys respectfully call the stone monkey the monkey king. The Monkey King traveled across the ocean alone to a fishing village to find a prescription for immortality.

He picked up clothes, stole shoes and hats, went to restaurants to drink and eat noodles, made many jokes and learned to be a man. After searching all the way, the Monkey King finally boarded the platform, and saw Bodhi's founder in the oblique moon. His father named him Monkey King.