Whoosh—
A cold, shadowy thing shot into Su Yu's forehead, quickly making its way to his heart. Su Yu turned pale, checking himself with his Soul Eyes. He found a glowing yellow spot in his heart, infused with soul powers and a shred of vital energy.
If Su Yu did not obey. The other party could use the soul powers to ignite the vital energy with a thought, making his heart explode and killing him instantly. This was a form of a seal!
Realizing this, Su Yu calmed down.
He silently activated the Great Thunder Heart Technique and pushed it into the golden seal. As long as Su Yu willed it, the Great Thunder Heart Technique could destroy the soul powers within the golden spot of light. This way, the rest of the vital energy can no longer be controlled, and the crisis could be averted.
But on the surface, Su Yu naturally showed an expression of fear.