Shangguan Hong must have had his own reasons for inviting Jiang Bieli to thoroughly investigate Zuo Yunxiao's death.
After all, he had long concluded that the person who killed Zuo Yunxiao was extraordinarily powerful, and there was a great possibility that they had reached the level of a Heavenly Immortal.
Facing such a high-level enemy, even if he were to investigate the matter clearly, he doubted he could wrest the Gathering Spirit Stone from that person's grasp.
Having fought Jiang Bieli many times, Shangguan Hong highly recognized his strength.
By pulling him in to thoroughly investigate this matter, as long as they could successfully find the killer, their combined efforts to confront that person would naturally increase the chances of wresting the Gathering Spirit Stone significantly.
"Brother Shangguan, how confident are you that the Gathering Spirit Stone, this Supreme Treasure, is indeed in the hands of the person who killed Zuo Yunxiao?"
