Anda's heart was now consumed with a thirst for revenge, he had obviously forgotten this detail.
He still thought of Lin Zhen as a mere monkey in the palm of his hand, unable to escape the confines of his Five-Finger Mountain.
He had already wounded Lin Zhen time and again, and there were several opportunities where he was confident he could gravely injure Lin Zhen to the point of death, but he never did.
That would be letting this guy off too easily, he actually severed his own path to sovereignty, how could simply killing him quench his hatred?
Anda came up with many ideas at this moment, like creating a Crystal Ball, trapping Lin Zhen's soul inside, and then taking Lin Zhen's soul around, letting Lin Zhen witness the torment and death of his loved ones firsthand.
Watching his hometown being destroyed, his race being exterminated, only then can he alleviate the hatred in his heart.