Why didn't the Monkey King's critical eyes recognize Pig Bajie?

The Monkey King's critical eye does not reach the level of Tathagata's eye, which can see the noumenon of things, while the Monkey King's critical eye can only see needs, auspicious spirits, auspicious clouds, evil spirits and so on. In China's mythology, monsters are all evil. For example, when the Monkey King passed through Hong Haier, he saw a red demon cloud, and white was evil. Good people are lucky. For example, the Monkey King saw auspicious clouds hanging from Tang Priest's head, and Guanyin's head hung with auspicious clouds, and so on. So the Monkey King saw Guanyin changed many times.

On the contrary, in the original works, the Monkey King often can't see some characters whose land has changed, because there is no evil in the land, and there is no auspicious feeling.

In addition, the Monkey King didn't misread the change of the cow king Murray Pig Bajie, mainly because he was so proud when he cheated the banana fan that he didn't observe it carefully and was coaxed by the old cow.

The landlord can take a closer look at the original, and there are many such places. For example, I saw the Bodhisattva in the 23rd time. The twenty-seventh time I saw Bai, and the thirty-second time I didn't see the woodcutter who became the fairy on duty.