Under Zhang Menglong's arrangement, all the Martial Artists and Demon Beasts around the Demon Eye Ghost City gathered there, and even under their call, more and more survivors came from various Ghost Cities.

For the first time in this world, someone had managed to conquer a Ghost City, making Demon Eye Ghost City an undeniable sanctuary for both humans and Demon Beasts!

"Brother Zhang, there are just the two of us coming in here. Where did you find so many powerful helpers?"

"Yes, Sect Master, those people are simply too strong. I, the proud number one expert of the Haotian Continent's Nine Swords, feel ashamed. I even think I'm unworthy of carrying his shoes."

"We can go home; we can finally go home!"

Everyone was moved to tears.

However, when they arrived at the teleportation area in the city center, they were dumbfounded. The passage that should have led them out of this World of the Undead had disappeared.

"What's going on?" Zhang Menglong looked at the Ghost Kings.

The Ghost Kings trembled all over and immediately said, "Boss, these passages are connected to Lord Feng Yan's Capital City. He must have received the news and closed this passage."

"So that's how it is." Zhang Menglong nodded, "No worries, we'll just have to deal with that Ghost Emperor."

"By the way, what kind of person is this Ghost Emperor?" Zhang Menglong asked.

"He's the first creature to come to this World of the Undead," said Demon Eye, "It's said he's been living for tens of millions of years and has devoured countless Soul Cores. With his abilities, he should have already broken through to a higher realm, remolded his life, and gone to the higher-grade world."

"But he chose to stay here because even if he went to a higher-grade world, he would have to start again as an ant, whereas here, he is an eternally supreme existence."

"You could say he's an elite of those who lie flat," Zhang Menglong laughed. Actually, he could understand such a choice; everyone has their own ambitions.

"For this reason, Lord Feng Yan's power has reached an unfathomable level, and his Capital City has more than 20,000 Ghost Generals, all of whom are not below us Ghost Kings in strength, and all are directly commanded by Lord Feng Yan."

"What about the others?"

"The rest are billions of Yin Soldiers. You could say most of the power of the entire World of the Undead is almost under his control. If he pushes his massive army, I'm afraid we wouldn't be easy to deal with."

Although Zhang Menglong had a group of talented individuals, their numbers were limited, and facing such a vast undead army, it would naturally be easy to protect Zhang Menglong, but protecting this Ghost City would be extremely difficult.

"Unless there are a large number of hot weapons available that can harm the undead creatures," said Demon Eye, "but you know, in our world, there are also undead from the technological world, but so far, even with their joint efforts, they haven't created weapons that can effectively harm the undead."

"Doesn't this mean our efforts are in vain?" Many Martial Artists and Demon Beasts showed regretful expressions.

Having finally met someone like Zhang Menglong who conquered a Ghost City and even made those Ghost Kings submit, they thought they had a chance to leave this damned place, only to hear such bad news.

Thinking of the impending Ghost Emperor's army, everyone felt a bit shaken. Such a scale seemed suffocating even just hearing about it.

"Damn, how come there's so little Cred Points?" Zhang Menglong checked his balance.

[Headmaster, summoning teachers is extremely costly, you know that, right?]

"No, that's not right. Last time, I summoned Yan Chixia for several hours, and it only cost a few million Cred Points. Today, a billion should be enough, right?" Zhang Menglong realized he almost used up all the Cred Points he earned during this time.

[Headmaster, when you summon each teacher, there's an additional 10% cost increase.]

"What the hell, why didn't you tell me earlier?"

[You never asked me!]

"Damn! What kind of deal is this?!" Zhang Menglong was speechless. It seemed that summoning so many teachers again was not possible with his current financial situation, but such a vast undead army couldn't be defeated by just one or two teachers. After all, Zhang Menglong's goal was not to break through but to wipe out these undead in one go!

"Looks like I'll have to rely on my Magical Treasure!"

"Wait here!" Zhang Menglong turned and walked into a corner.

A few minutes later, when Zhang Menglong appeared again, the shadow on his face had completely disappeared.

"Brother Zhang, did you find a way?" Kong Lan had seen this scene before. The last time Zhang Menglong helped Qing Luo restore her Bloodline Power, he disappeared for a few minutes and returned with a solution.

"Isn't it obvious?" Zhang Menglong said, "Stretch out your hand!"

Kong Lan stretched out his palm, not knowing what Zhang Menglong was up to.

Zhang Menglong placed a pitch-black object in his hand.

"What is this?" Everyone looked at the object.

"Seems like a plant seed?"

"What's the use of this?"

"Rustle!" Zhang Menglong started pouring out bags full of oddly-shaped plant seeds from his body.

"From today on, everyone in Demon Eye Ghost City, whether human or ghost, must plant these plants around the city. The more, the better!"

"What do you mean?"

"Are we supposed to hold out here and store up food?"

"We're already dead, what need do we have for food?"

"And our city's defensive power can't possibly withstand the Ghost Emperor's army!"

"What's he planning with this?"

"I'm starting to regret surrendering."

"Yeah, the Ghost Emperor won't let us off."

All the undead of Demon Eye Ghost City were a bit despairing, but with their Ghost Kings surrendered, what choice did they have.

Though Zhang Menglong's orders seemed strange, no one dared defy him, as those Ghost Kings were controlled by him, and the lesser undead dared not go against the Ghost Kings.

In just a few days, the areas surrounding the city were planted with these plants one after another.

These plants seemed genetically modified and, under this world's green sun, were growing at a terrifying speed. By the third day, there was already a large area of mature plants.

These plants grew very large; a single pea sprout stood almost two meters tall, and there were gourds reaching four to five meters, but apart from being slightly more edible, they couldn't think of any other use.

"Hmm, growing quite well!" Zhang Menglong looked at the planting area stretching 100 to 200 meters in front of the wall, showing a satisfied smile.

"Boss!" At this time, Demon Eye Ghost King arrived by Zhang Menglong's side, "The scouts I've sent have received news that the Ghost Emperor's vanguard has arrived, and though there are not many, only about 200, they are top elites personally trained by the Ghost Emperor. Meeting them one-on-one would be very troublesome for us."

"200 people?" Zhang Menglong laughed, "That's not even enough to fill the gaps in my teeth! Go call everyone to come and watch the battle!"

"Watch the battle?" Demon Eye was stunned. Zhang Menglong hadn't even started deploying his troops, and the powerful human cultivators from that day hadn't appeared. Was he inviting people to watch the collapse under 200 men?

"Just do as I say! Why so much nonsense?"

Soon, the walls were crowded with countless undead, Martial Artists, and Demon Beasts, all anxiously looking into the distance, waiting for the Ghost Emperor's vanguard to appear.

"They're here!" Following the sound of horse neighs, 200 cavalry appeared in their view.

The cavalry were all burly, their horses aflame with blue Soul Flames, exuding an aura no weaker than the Ghost Kings.

They observed from a distance for a while and then charged toward Demon Eye Ghost City on horseback.

In their eyes, there was no need for the Ghost Emperor himself to act; they alone could flatten this city.

However, at that moment, the pea sprout at the forefront of the plant cluster swayed, and with a wriggle, it unexpectedly grew an organ resembling a cannon muzzle!

"Boom!"

The cannon mouth suddenly fired a huge pea directly at an Undead Knight.

"What is that?" The Undead Knight was stunned and immediately raised his weapon to block.

However, he clearly underestimated the power of this pea, as a tremendous force knocked him off his horse, even breaking the weapon in his hand!

"That...that pea isn't normal!"