Hints of joy appeared in Qingfeng's eyes after he heard the Dark Night Emperor.
It was now most important for him to find the main root of the ancient blood grass. Once he found its main root, he would destroy it, and the ancient blood grass would naturally die.
Qingfeng just used his clairvoyance, but still failed to find the main root, because there were too many ancient blood grass in front of him. There were at least ten thousand vines, as his eyes grew dizzy from searching for it.
The most crucial reason was that the main root wasn't even amongst the ten thousand vines of ancient blood grass, but instead it was at the very back.
Qingfeng could only destroy it once he found out the exact position of the ancient blood grass.
Qingfeng asked mentally, "Senior, do you know where the exact position of the ancient blood grass main blade is?"