Time slipped away as Su Mo drove the Black Steel Envoy, darting through the ruined city and drawing out a horde of monsters.

But he couldn't find Dandan anywhere, which made Su Mo frown slightly. Could his luck really be that bad?

He took a deep breath and continued searching in the mecha.

The result was speechless. The search had made too much noise. He was surrounded by a dense swarm of zombies. These zombies were biting the armor of the Black Steel Envoy like crazy, and they didn't stop even when their teeth broke.

Looking at the tide of zombies, Su Mo couldn't help but sigh. Fortunately, this game wasn't a normal monster-grinding leveling system.

Otherwise, this place would definitely be a super monster-grinding paradise, and it would have been cleared long ago.

Just then, a swarm of zombies flew into the sky, as if some powerful monster was coming.

Seeing this scene, Su Mo's eyes lit up. He found it!

Sure enough, the cute little girl with a grinning, ghastly face appeared. She swung a huge meteor hammer, killing all the zombies that stood in her way, and rushed towards Su Mo like crazy.

Compared to the first time he saw her, the heat radiation value on Dandan was even higher, almost reaching Type II.

If she had a little more time, she would probably evolve soon.

Of course, there was a reason why she was evolving so slowly. A large number of players in this city were killed. The rest either fled or were killed by the invading zombie tide. She simply didn't have much opportunity to absorb nutrients. Otherwise, with her talent, she might have evolved into the ruler of this city.

Su Mo controlled the mecha and bowed slightly to Dandan, who was charging towards him.

Of course, what he got in return was a meteor hammer slamming down fiercely. However, Su Mo simply raised the chain gun in his hand to block it, stopping the charged attack. Then, Su Mo raised his steel left hand into a fist and slammed it down hard.

He directly smashed Dandan into the ground.

Boom!

The concrete street cracked and caved in.

Then, Su Mo raised his left hand and saw Dandan, smashed into a bloody pulp, lying on the ground, still struggling to get up.

Her vitality was indeed very complete.

But Su Mo didn't give her a chance. He raised the black chain gun in his hand and pierced it down, right into her heart.

Viscous blood splattered everywhere. Dandan, who had been struggling, froze.

Su Mo controlled the mecha and reached out, accurately taking the cross necklace key from Dandan's neck, and then controlled the mecha to leave.

Not long after Su Mo left, countless zombies surrounded the dead Dandan, all opening their mouths to devour her.

Suddenly, Dandan's chest cracked open, and blood tentacles pierced through the zombies, directly draining them.

Instantly, the surrounding zombies were swept away. However, the blood she left behind was like honey, continuing to attract the surrounding zombies to rush up madly to their deaths.

......

------------------------------------

Outside the bio-chemical base, Sun Duo Xiang lay on the ground, yawning boredly.

"What exactly did Su Mo go to do? He's been gone for so long and hasn't come back yet."

"He's probably gone to find reinforcements."

Zhang Hao thought for a moment and said.

"I don't think so. It won't work no matter who he finds. This door is hard to open."

Sun Duo Xiang said with emotion.

Lan Xi said to Sun Duo Xiang, "Don't be sarcastic. Hurry up and think of a solution."

"Lan Xi, you think too highly of me. If Su Mo can't do anything, what can I do?"

Sun Duo Xiang shrugged helplessly.

Just then, the roar of a power source came from afar. Lan Xi and the others were overjoyed. Su Mo was back.

Sure enough, it wasn't long before Su Mo returned, driving the Black Steel Envoy. He parked the mecha at the base entrance, then opened the cockpit and jumped down.

"Big Brother, where are the reinforcements?"

Sun Duo Xiang kept looking into Su Mo's cockpit.

"I didn't go to find reinforcements."

Su Mo responded indifferently.

"Ah? Then how are we going to open that door?"

Sun Duo Xiang had a bitter face. The glimmer of hope that had finally risen was dashed. It seemed that this operation was really going to be fruitless.

Zhang Hao and the others were also a little disappointed, but they didn't say anything. After all, the difficulty of opening the door was indeed too great.

Su Mo looked at the slightly disappointed crowd and took out the cross key.

Lan Xi and the others' eyes widened.

"Su Mo, where did you get that?"

"Yeah, we explored this base with you. There was no hint anywhere in this base that there was a key!"

Sun Duo Xiang was also dumbfounded. Where did Su Mo conjure it from?

"This key was on Dandan's body."

"Who's Dandan?"

Sun Duo Xiang and the others had long forgotten.

"It's the monster that almost smashed us into meat patties when we met Zhang Hao and were driving. This key was on her neck."

Su Mo explained indifferently.

The way Sun Duo Xiang and the others looked at Su Mo changed instantly. They asked in disbelief, "Boss, is your brain a computer? You still remember something from so long ago? And you were in the mood to observe her at the time?"

"Stop talking nonsense, let's go!"

Su Mo replied in a good mood.

"Okay!"

Sun Duo Xiang and the others followed Su Mo back into the base, beaming.

Soon, they arrived at the dividing door.

Under the gaze of Lan Xi and the others, Su Mo inserted the key into the hole. It fit perfectly.

Sun Duo Xiang became even more excited.

At this moment, Su Mo's gaze fell on the rotary mechanical combination lock. He raised his hand, just about to try turning it and listening to the sound of the gears turning inside, when he suddenly stopped.

Since Dandan's key fit, then maybe the string of numbers recorded on the back of the group photo he had seen before was the password.

Thinking of this, Su Mo decided to try anything. Anyway, there was no particularly good solution. So he turned it according to the password on it.

When he turned to the last number.

*Click!*

A crisp sound rang out. Su Mo was overjoyed. He immediately turned the key.

Then he shouted to Sun Duo Xiang and the others, "Turn that rotary valve!"

"Okay!"

Sun Duo Xiang and the three others immediately stepped forward and reached out to turn the switch.

This time it was unexpectedly smooth. The switch was turned!

"It's moving! It's moving!"

Ma Ke was so excited that he was incoherent.

"Stop talking nonsense, turn it quickly!"

Sun Duo Xiang shouted excitedly.

Soon, as they turned it, the pale metal door opened from the side.

Instantly, a cold current rushed towards them!

Su Mo and the others shivered. A prompt popped up in front of them.

"Warning, temperature is continuously decreasing. Life support systems operating at maximum!"

"Damn, it's so cold!"

Sun Duo Xiang subconsciously took several steps back.

Su Mo looked inside, but it was dark and he couldn't see anything.

"Activate night vision mode!"

At this moment, another prompt appeared in front of Su Mo. Instantly, the originally dark vision turned into a dark red vision, and he could clearly see the situation inside.

"Wow!"

Sun Duo Xiang and the others couldn't help but exclaim in surprise.