Suddenly, the sound of rushing wind rose up from deep underground. At the same time, Lu Yin felt as though his body had been suddenly moved. A gust of wind whistled by in front of him, shooting upwards and slicing apart everything that it passed by.

He felt his scalp go numb; he had been right. That gust of wind had even torn through the void, and it had definitely been more powerful than an attack from a normal Envoy. In fact, it might have even been comparable to an attack from an Envoy who had passed through three stellular tribulations, which meant that it was equivalent to an attack with a power level of more than 700,000. Even if Lu Yin was wearing his universal armor, it most likely would not be able to protect him from a direct hit from that gust of wind.

"Supervisor, what was that?" Lu Yin was quite upset.

Qing Chen stood in place in the air as he solemnly replied, "The danger field of a sourcebox."

Lu Yin looked down, and his eyes focused. "Is there a sourcebox down below?"

"Those terror ants were killed by this sourcebox’s danger zone. There is a truly impressive sourcebox array down there," Qing Chen replied.

"It really is a sourcebox," Lu Yin solemnly stated.

Qing Chen waved a hand, and Lu Yin once again felt as though he had been isolated from the world. Another blast of wind whistled by, and like before, it failed to harm him in the least. This was the strength of a Semi-Progenitor...