What's the point of Prajna tattoo?

The Prajna in the Buddhist Prajna Heart Sutra refers to the wisdom of the Buddha, while the Prajna in the tattoo is the face of a female ghost, which stands for "angry face". In fact, it is more important to express women's jealousy. Prajna is a kind of ghost in Japanese legend, or rather a kind of resentment, which is said to be an evil spirit formed by women's strong jealousy and resentment.