Princess Tiefan has the identity of a "rogue", but a rogue is a blood-eating monster among monsters, which is very scary. Like many monsters, she once stopped Tang Priest from learning Buddhist scriptures in the West, but hooligans never did anything unnatural. She is the mother of a rich boy and the wife of Niu Wangmo. Like the "Seven Saints of Meishan", she had a similar experience and was influenced or comforted by a certain fairy, thus becoming immortal.
In the original work, the author mentioned that in the jurisdiction of Princess Tiefan, a teenager selling cakes said that a fairy helped him sow grain and harvest it in time when the weather was favorable. Princess Iron Fan's treasure fan itself is a miracle, not a fairy. How to use it?
And in Journey to the West, the Monkey King never said that Princess Tiefan was a demon. If Princess Tiefan was a monster, Wukong should have taken precautions long ago, instead of calling her sister-in-law affectionately when she saw Princess Tiefan and even making her feel sorry for herself.
One of the proofs of Princess Iron Fan's identity is that when the Monkey King and his master went to Cuiyun Mountain, they also found immortal things here, so it can be seen that Princess Iron Fan is not a demon but a fairy.
When the Monkey King asked the woodcutter for directions in the mountains of Cuiyun Mountain, he was told that there was a fairy here to protect others. Shan Ye woodcutter asked nothing of Princess Iron Fan, but it can be seen that they get along well with Princess Iron Fan. After all, Princess Iron Fan holds the ups and downs of the Flame Mountain, and Princess Jade Face, the concubine of the cow, presented her with a big gift. With a strong family background, there is no need to do anything despicable near the fish.
From the fact that her son can become a lucky teenager, it can also be seen that only the descendants of immortals can become immortals. Besides, Guanyin can accept her son as a fairy so easily, which shows that Princess Tiefan is actually a cultivated fairy in Shan Ye, otherwise Guanyin would not help her.