That tattoo of a slender, flowing red carp wound around Mu Ziya's right forearm, tail dissolving into the mist near her wrist. That was spiritual tattooing. He has never seen it before.
Spiritual tattooing and Talismans share the same base of being both inscriptions but spiritual tattoos are very volatile and dangerous. Instead of using talisman paper, the inscription uses the Taoist's body as the paper.
They were also permanent. In his time they were already described as dangerous and obsolete.
"It seems Junior Brother Gu is also interested in talismans. You have the same expression as the disciples of the Talisman and Formation Hall whenever they see my tattoo." She stepped forward and saluted him, "Hello! I am Mu Ziya, the team leader. I look forward to working together."
Gu Yuze returned the salute, "Gu Yuze. " He introduced himself.