Not every cultivator in the Cloud River Realm has rune tattoos, as there are very few rune tattoo masters in the entire Nine Provinces capable of inscribing spirit runes on a cultivator's body.
This requires outstanding accomplishments in the Path of Spirit Runes, extremely skillful tattoo techniques, and furthermore, even if such a rune tattoo master is willing to perform the task, the materials required are highly valuable.
Rune tattoos are based on spirit runes and come in many varieties: offensive, defensive, supportive...
For Lu Ye, he doesn't need the offensive or defensive types because he has Sharpness and protection, nor does he have much need for supportive ones since he can activate many supportive spirit runes by himself.
However, there's one type of supportive spirit rune that he has coveted for a long time.
So upon hearing Madam Yun's words, he answered without hesitation, "Void!"
