Princess Iron Fan

She is one of the most popular Journey to the West villains, alongside her husband the Bull Demon King, her son Red Boy, and Baigujing.

[1] In Journey to the West, Princess Iron Fan made the villagers living near Flaming Mountains yield to her and offer her tribute like a goddess.

The statues of the Princess Iron Fan and Bull Demon King have been established at the Flaming Mountains Scenic Area in Xinjiang and have become a popular tourist destination.

[3][4] Princess Iron Fan is a beautiful demoness, married to the Bull Demon King and mother to the Red Boy.

The only know thing immune to the fan's winds is a 'Wind-Arresting elixir' (定风珠/定风丹; Dìngfēngzhū/Dìngfēngdān), a bead of which was loaned to Sun Wukong from the Boddhisatva, Lingji, who had originally gotten it from Tathāgata Buddha.

[6] When Sun Wukong and his fellow pilgrims came to the region, they encountered an extremely hostile range of volcanic mountains that they could only pass if the volcanoes became inactive.

Having barely escaped from the fire, Sun Wukong returned, pretending to be her husband through shape shifting and obtained the real fan.

After obtaining a Wind-Calming Pill from the immortal, Huaguang successfully captured Princess Iron Fan and married her.

Princess Iron Fan and Sun Wukong. Painting in the Long Corridor of the Summer Palace in Beijing .
Sun Wukong and Princess Iron Fan, as depicted in the Journey to the West , Shidetang Hall of Jinling edition (1592)
Princess Iron Fan and Sun Wukong. Painted decoration in the Long Corridor at the Summer Palace in Beijing, China
The Huaguang Great Emperor Temple