He needed to use the Spirit Command Talisman to leave a mark in Bai Yu'er's soul. Only then could he completely control her.
"Blood-Robed old ghost, show mercy. I can swear not to be your enemy again."
Bai Yu'er begged for mercy.
"Why are you saying all this? You could have chosen not to provoke me. Unfortunately, you did not."
Song Shi's glabella lit up brightly. His Spiritual Power turned into an illusory him and flew out. After forming a seal, it shrank and formed a light that suddenly shot onto Bai Yu'er's head.
Buzz!
The air trembled slightly, and circles of ripples spread out. Then, all the runes formed a vortex and quickly fused into the space between Bai Yu'er's eyebrows.
The latter's eyes lost focus and fell into a daze.
In his mental world, Song Shi stepped in wearing clothes made of purple-black runes.