Why did the black bear spirit in Journey to the West steal Tang Priest's cassock?

Journey to the West, China, one of the four classical novels, is one of the best fairy tales, with seven novels? Make a scene in heaven? At the beginning of the story, the image of the Monkey King was mentioned at the front of the book. Eighty-one difficulties, seventy-two changes, all kinds of magical skills full of fantasy; For all kinds of treasures, the Tang Priest took three disciples, four of whom went to the West to learn from them. The devil was banished all the way. The Monkey King is a hero in everyone's heart, but there was such a monster who was not interested in Tang Priest's meat just to steal his cassock. As we all know, eating Tang monk meat can make you live forever and avoid hard training, but the black bear essence doesn't think so, just want to get the robe.

This black bear essence was originally the red man of Taishang Laojun. This time, the old gentleman sent him down, taking advantage of the opportunity of Wukong people to learn from the West, so he knew Wukong's life like the back of his hand. Although there is such a statement, it can't be verified in the original work, because the author didn't mention the origin of black bear essence at all. There is another side that can prove that Guanyin knew the black bear essence before this, that is, when Guanyin recycled the black bear essence, she said whether she would be willing to convert this time and give it to her this time, that is to say, there will be another time. It can be seen that Guanyin is still good to him and wants to take him in because of his good character. After getting the dragon robe, the black bear worked hard for his mother. There is also a black bear spirit who has no interest in this cassock, but has a very high yearning and respect for my Buddha. In fact, the black bear who has been paying attention to the series of events in Guanyin Temple knows that there is still a mountain god missing in Guanyin backyard. With its geographical advantage of about 20 miles between black wind mountain and Guanyin Temple, stealing the cassock given by Guanyin to Tang Priest is very likely to win the favor of Guanyin, and thus get the position of the immortal, which is also the most desired of monsters.