Before leaving the laboratory, Tang Ming used his poison skills to modify the poisonous gas inside.
Even if the Ming Group activated the gas elimination system, they wouldn't be able to remove the poison he left behind. His poison was so potent that even gas masks and protective suits couldn't block it!
The people from the Ming Group had no way to start the laboratory's purification system, so he wasn't worried about them seizing the lab.
To make the Ming Group give up, Tang Ming left an empty laboratory for them to study, confident that no one could deal with his poison.
After the Ming Group suffered heavy casualties, they naturally wouldn't dare think about the lab anymore. He could then send people from the Poison Sect with the antidote to take over the lab.
