Chapter 648

Li An tried to explain: "We are here to seek the Ancient Key; it is crucial to us. Please let us pass."

Li Na, however, remained unmoved. She swung her long sword, pointing it directly at Li An: "Whatever your purpose, this is not a place for you. Attack!"

At Li Na's command, the guards swiftly launched their assault. Guo Yao immediately stepped in front of Li An, her hands forming seals with rapid speed. A pink barrier instantly formed, blocking the first wave of attacks. Li An took the opportunity to observe his surroundings, searching for a breakthrough.

"Li An, be careful!" Guo Yao suddenly shouted. One of the guards had taken advantage of her distraction to launch a sneak attack from the flank. Li An's figure flashed, narrowly dodging the strike. At the same time, he swung his hand backward, sending a black energy wave that struck the guard, rendering him instantly combat-incapable.

Seeing this, a flicker of surprise crossed Li Na's eyes, but she quickly regained her composure: "It seems you do possess some ability, but this is far from enough!"

She surged forward like a silver leopard, diving straight at Li An. Sword light flashed like lightning; every strike contained terrifying power capable of tearing through space. Li An dared not be careless, focusing all his attention on countering Li Na's assault. The two exchanged blows, locked in an indecisive battle.

Guo Yao assisted from the side, occasionally releasing pink energy waves to disrupt the guards' attacks while seeking opportunities to support Li An. However, Li Na's strength was simply too overwhelming; even Li An began to feel the strain.

In a fierce exchange, Li Na's sword struck Li An's shoulder. Blood instantly stained his tunic red. The pain made Li An's consciousness blur, but in this moment of life and death, a power unlike any before surged within his heart.

"I cannot fall like this! Guo Yao is waiting for me, and the truth lies ahead!" Li An roared in his heart. His eyes suddenly became blazing, as if two flames were burning within them.

Just then, the power within Li An seemed activated by some mysterious force. His aura instantly became overwhelmingly strong. A black energy surged from his body, swirling around him to form a black shield that blocked Li Na's attacks one by one.

"This... what kind of power is this?" Li Na stared at Li An in shock. She had never encountered such bizarre yet powerful energy.

Li Na did not answer; he merely looked at her coldly, his eyes filled with determination and killing intent. He took a deep breath, then surged forward. Black energy formed a massive wing behind him, like a dark eagle spreading its wings to soar.

Li An's speed reached its extreme, almost becoming a black lightning bolt that instantly arrived before Li Na. He clenched both hands into fists, black energy condensing upon them as if ready to tear space apart.

"Break!" Li An shouted loudly. His double fists struck out fiercely. The black energy wave surged forth like a tsunami, colliding with Li Na's sword light and emitting a deafening boom.