The short old man was perfectly lucid, his face twisted with rage. "You're asking for death!" As he spoke, he suddenly retreated. The laboratory doors slammed shut, cutting him off from Lu Yin. The next moment, the lab shook. Black currents of air poured in from every direction, quickly filling the entire underground space and sealing off every escape route.
Lu Yin frowned and braced his spear against the laboratory doors. He pushed with all his might. With a sharp crack, the doors split open, then shattered completely with a thunderous crash. A roar followed, and the zombie inside charged out at him.
Lu Yin used Secret Steps to evade it. The zombie charged into the black currents of air, and its roar abruptly ceased. Its whole body convulsed, then vanished completely.
Lu Yin's scalp prickled. He leaped into the lab, only to be met by the short old man's furious attack. The old man had donned a metal suit. Lu Yin dodged with Secret Steps, and the space where he'd been standing split open, the attack tearing through the entire forest.
Lu Yin narrowed his eyes. The short old man had only reached the Cruising Realm. His Hunting Realm Rune Dao Numbers came from that metal suit, which could withstand attacks from Hunting Realm powerhouses.
"Heh heh! I never expected such an interesting test subject to show up out of nowhere. Stay and keep my little darlings company!" the short old man cackled, slamming into Lu Yin.
Lu Yin's eyes snapped wide. His Aura tree appeared, its branches binding the old man. "Thirtyfold—hundredfold—Wave Palm!" Dozens of explosions shook the underground, splitting the space. The powerful palm force blasted the old man straight into the black currents of air outside the lab.
Even the metal suit cracked. Black currents seeped