Yue Xiaofei's long howl rang on and on, echoing through Mangshan's mountains and ravines.
That howl held endless pain, endless fury, and endless killing intent!
Inside the Underground Palace, Li Jiahao and Ning Hongye watched Yue Xiaofei, who seemed possessed by madness, their faces full of worry.
They could feel the power within Yue Xiaofei rampaging in an extremely dangerous way.
If this continued, he might lose control of that power and burst apart.
"Xiaofei! Calm down!"
Li Jiahao flashed to his side and reached out to press down on his shoulder.
"Get away!!!"
Yue Xiaofei's eyes were blood-red as he swung his hand back.
An immense force blasted Li Jiahao more than ten meters backward, slamming him hard into the stone wall.
"Urgh!"
Blood surged into Li Jiahao's throat, and he spat out a mouthful. Yet his face showed shock rather than pain.
"How... did this guy suddenly get so strong?!"
He felt as though a Primordial Ferocious Beast had rammed him head-on, nearly knocking all his internal organs out of place.
Ning Hongye did not approach.
She simply stood quietly a short distance away, her brows drawing together slightly beneath the red silk.
She could "see" that the black emperor dragon aura around Yue Xiaofei had already taken solid form.
It had become the phantom of a savage Primordial Black Dragon, coiling around his body and unleashing waves of silent roars.
This was a sign that his power was running out of control.
It was also... a sign of an imminent breakthrough.
Yue Xiaofei knelt on one knee on the cold floor, his fists clenched so tightly that his nails dug deep into his palms. Blood dripped between his fingers, but he was completely unaware.
The scene from moments ago replayed in his mind, over and over.
His