Why did Erlang God say that Pig Bajie was his savior in Lotus Lantern Prequel?

Yao Ji, the younger sister of the Jade Emperor, privately married Yang Tianyou, an ordinary scholar, and gave birth to three children, namely Yang Jiao, Yang Jian and Yang Chan. When the Jade Emperor knew about it, he sent heavenly soldiers to earth, killed Yang Tianyou and Yang Jiao, and locked Yao Ji at the foot of Taoshan Mountain. At that time, Marshal Tian Peng, Pig Bajie, drank away the crowd and personally killed Yang Jian's brother and sister. But with the aging of the palm, Yang Jian's brother and sister appeared suspended animation. When they woke up, they grew up and ran away. So Erlang God said that Pig Bajie was his savior.

Myths and legends of the prequel to Lotus Lantern

The Jade Emperor has a sister named Yao Ji, who is beautiful and powerful. Once when she came down to earth, she ignored the strict precept that the man of God could not marry, because she fell in love with Yang Tianyou, a scholar of Xia Dynasty, and was willing to live in seclusion with Taoshan for life.

Later, they had three children, the eldest son Yang Jiao, the second son Emperor Wen of Sui and the third daughter Yang Chan. They are a happy family.

However, the good times did not last long. The queen mother found that Yao Ji was preoccupied with worldly affairs and violated the dogma, so she asked Dajin military commanders to take people to Taoshan and arrest Yao Ji for punishment. Yao Ji vowed to resist to the death. In that World War I, Yang Tianyou and his eldest son died, and Yao Ji was crushed under the Taoshan Mountain where the Jade Emperor turned into a peach tree.

Only the second son, Emperor Wen of Sui, and his sister, Yang Chan, escaped. In order to survive and take care of her elder sister, Yang Jian endured humiliation. Finally, his behavior touched Nu Wa Niangniang. Nu Wa Niangniang sent Yu Ding to accept him as an apprentice, and Yang Jian entrusted Nu Wa Niangniang to take care of Yang Chan.

Five years later, Yang Jian, aged 16, killed Taoshan with an axe and rescued his mother who had been imprisoned at the foot of the mountain for five years. The loud noise that shook the earth shook heaven. The queen mother won't let Yao Ji go. Yang Jian sent ten suns to burn Yao Ji when he was looking for water! Yang Jian was outraged and went after ten suns. In the West Sea, there is only one sun left. At this moment, Yang Jian met Princess Xihai.

Then, Emperor Wen of Sui devoted himself to water conservancy and made great achievements, during which he surrendered to the Six Saints of Meishan and became brothers with them. He was named Jiro Shinji, but he signed the words "Listen to the tune and don't listen to the announcement" in the appointment book of the heaven, and lived in Guanjiangkou. Yang Chan is also known as Notre Dame and fief Huashan. At this time, Yang Chan has grown slim and graceful, and got the lotus lantern of Nu Wa Empress. Later, Yang Jian appeased the Monkey King, dissolved her marriage with Princess Sihai, and was named the God of Justice. But what Yang Jian didn't expect was that Yang Chan took the old path of his mother and fell in love with Liu Yanchang, a poor scholar. A year later, he had a son named Aquilaria sinensis.