"Sure, I extracted it from the rats' bodies..."
Hu Menghao rambled on with a lengthy explanation, but Chu Han dug at his ear, unable to take in a single word. Simply put, he had extracted a substance from biological physical energy that could be made into touch-sensitive gel. Once coated with Hu Menghao's fingerprint, it could directly open that door.
"If you can make it, hurry up." Chu Han had already swiftly gotten into action. Then he took several compressed biscuits from his pocket—actually, from the Dimensional Space. "This is the last of my food. It should keep you from starving for three days. I'll make a move as soon as possible to lure Cao Cunhui over."
"You?" Hu Menghao, who was working on Chu Han's pass, looked somewhat surprised. "How will you lure him?"
"Don't worry about that. Just trust me. Also, I'll give you a code phrase." Chu Han casually rubbed his nose. "If one of my subordinates says this code phrase in the future, it means they're one of us. You can trust them completely. It'll also make it easier for me to send other helpers to assist you."
Hu Menghao immediately grew suspicious. "So thorough? What's the code phrase? Some complicated encryption cipher?"
Chu Han instantly had ten thousand curses running through his mind, and the corner of his mouth twitched. "It's not what you're imagining. If the code phrase were a password, wouldn't anyone clever enough be able to crack it?"
"Right, right, right." Hu Menghao suddenly understood, staring eagerly at Chu Han as he waited for the next sentence.
"My code phrase is very simple." Chu Han curled his lips into a smile. "Question: Why is the sky blood-red during the apocalypse?"
Hu Menghao immediately went into mad scientist mode again. "I've researched that.