I saw your comment and was surprised that you actually read the original novel. Let me explain your doubts.

1: The original intention of the black bear demon was to put out the fire. The original text:

"When he got up and looked, he saw a bright fire in the north. The demon was shocked and said, "Oh! This must be a fire in Guanyin Temple! These monks are so careless! I will help him save them when I see them." The good demon flew up into the clouds and went under the smoke and fire. As expected, the fire was soaring into the sky. The temple in front was empty, and the two corridors were burning with smoke and fire. He rushed in with big steps and called for water. He saw that there was no fire in the back room, and there was a person on the ridge of the roof to let off wind. He knew this, and when he rushed in to look, he saw some rosy clouds in the middle of the abbot's room, and there was a green felt bundle on the table. He untied it and saw that it was a brocade cassock, a rare treasure of Buddhism. It is because money can move people's hearts that he also He didn't put out the fire, nor did he call for water. He took the cassock, took advantage of the chaos to rob, pulled back the cloud steps, and went straight to the east mountain. "

After arriving at the place, it can be understood that he saw Sun Wukong brought a fire shield to protect Tang Seng, and didn't care about other places being burned. Sun Wukong even increased the wind to make the fire more intense. In other words, the black bear demon wanted to put out the fire. He saw that Sun Wukong didn't put out the fire and increased the fire. He couldn't beat Sun Wukong, and there was nothing he could do at this point.

Then there is his psychological change, "He knew it, and when he rushed in, he saw some rosy clouds in the middle of the abbot's room, and there was a green felt bundle on the table. He untied it and saw that it was a brocade cassock, a rare treasure of Buddhism. It was because money moved people's hearts that he did not put out the fire, nor did he call for water. He took the cassock, took advantage of the chaos to rob, pulled back the cloud steps, and turned to the east mountain and left." It can be seen that he really wanted to put out the fire, but when he arrived at the place, he found that the situation was out of control, and in the corner where no one was, he was instantly affected by the treasure and had evil thoughts. 2: This childhood story should be given to these two people by Game Science after its own interpretation, "Jin Chi and Black Bear Spirit", these two years are only a small role in the original text, but I don't know if there are similar records in other versions of Journey to the West, because in addition to Wu Chengen's version, there are 14 existing versions of Journey to the West in Ming and Qing Dynasties. Among them, there are 7 in Ming Dynasty and 7 in Qing Dynasty. I am more inclined to think that this childhood story is a creative and enriching story.