I only reached the Foundation Establishment stage at eighty years old, and then the system appeared.

Lingpan City is located in the middle of the Blue Grass Plain, with a population of 150 million. It has one city lord and two deputy city lords, all of whom are at the Immortal Emperor Realm.

The Blue Grass Plains span over 100,000 li in circumference, while Lingpan City spans over 1,000 li in circumference. The Blue Grass Plains are named after the high-grade immortal herb, Blue Grass, which is produced there. Lingpan City also relies on this high-grade immortal herb to support its 150 million inhabitants.

In times of peace, being on a vast plain is quite nice, but during the demon invasion, such a place becomes a burden.

Because of the vastness, no matter where you fly, you will be seen at a glance. But if you are in a city next to a remote mountain range, you can hide in the deep forest and no one will be able to see you.

Now, Lingpan City has been targeted by the demon army, and the residents of Lingpan City have also felt a sense of oppression. As a result, Lingpan City has begun to seal off the surrounding city gates and open the protective shield.

Outside the Bluegrass Plains, four demon armies had already joined together; this area was now the heart of the inland region.

After decades of wreaking havoc, these demon armies still number twelve million.

Because this Blue Grass Plain is located inland and is a vast plain, everyone thought that the demon army would not dare to cause trouble here.

However, for this invasion, the demons prepared a confinement array plate for each army. This array plate can restrict air, ground, and information transmission. In other words, once the array plate is opened, nothing in the array can fly, burrow underground, or transmit information.

The twenty Demon Emperors gathered to discuss and make decisions. The Bluebird Demon Emperor spoke up: "How have you all fared over the past few decades? Our fifteenth army has only captured a little over five hundred Immortal Kings. I heard that my brother Bluetooth and his army conquered a small Immortal City, and each Demon Emperor received nearly three hundred Immortal Kings."

"Damn, they're so lucky!" The Demon Emperor Chikan's eyes were practically red.

"This immortal city before us has a total population of 150 million, and there should be thousands or even tens of thousands of immortal kings, right?" Even the Demon Emperor Yu Mei couldn't help but feel a little itchy.

"Let's get started tonight. Once we finish this deal, we'll have completed half of our needs!" The Demon Emperor chuckled.

The other demon emperors chimed in, all hoping to take action tonight.

After discussion, it was decided that the four demon armies would surround Lingpan City from all four directions tonight, activating the imprisonment array as they moved, ensuring that no one in the city could escape.

Around 8 p.m. that evening, the four demon armies began their operation, and the imprisonment array was activated.

In the city of Lingpan: "What happened? Why can't I fly?"

"Me too, what's the reason for this?"

"Could it be the demon army arriving?"

"You jinx! This is deep inland; how could there possibly be a demon army here?"

"Let me ask the fairy city beyond the Great Plains."

"Oh no, we can't even send messages!"

"Try burrowing underground, damn it, it can't even burrow into the ground!"

At this moment, the voice of City Lord Liu Linzhi resounded throughout the entire city: "Fellow immortals of Lingpan City, our Lingpan City has been surrounded by the demon army. Now we can only pray that other immortals will discover our situation."

"Don't be discouraged, everyone! Our protective shield can still defend against the Demon Emperor's attacks for a while! We must work together and overcome this challenge!"

However, the low-level immortals and non-immortals in the city had already begun to weep secretly. A demon army had five demon emperors, while the city only had three immortal emperors. Everyone had lost all hope!

At this moment, the guards on the city wall had already seen the demon army. Although its number was less than one-tenth of the city's residents, there were still hundreds of demon emperors and a dozen or twenty demon lords among them!

Under the command of the Demon Emperors, the demon army began to attack Lingpan City. The protective shield was on the verge of collapse under the attack of tens of millions of demons. The skills unleashed by the guards on the city walls were constantly killing the demons below. However, most of the dead were low-level demons. These little Karami were not taken seriously by the Demon Emperors.

Finally, a demon emperor, seeing that he hadn't been able to conquer the city after so long, swung his palm, and instantly, a gigantic palm appeared in the sky, slamming into the protective shield.

After a deafening roar, the entire protective shield shattered like broken glass, exposing the entire Lingpan City to the demons.

"Charge! All the flesh and blood here are ours!" a demon emperor shouted, raising his arm.

The demons that stormed into the city were like locusts, wantonly capturing any immortals they saw, for the flesh and blood of the dead were not as good as that of the living.

In the city lord's mansion at the center of the city, each of the three city lords and deputy city lords was surrounded by dozens of demon emperors. Blood flowers would occasionally burst from the bodies of the three immortal emperors, but their attacks on the demon emperors were blocked by the demon emperors around them.

Finally, the three Immortal Emperors were almost all covered in blood. The city lord looked around and saw that most of the immortals in the city had been captured alive. Some immortals who were unwilling to fall into the hands of the demons had started to self-destruct. Every now and then, there were earth-shattering explosions throughout the city.

The city lord roared in grief and rage, "You bunch of scum, come with me to the underworld!" An even more violent explosion rang out, and half of the city lord's mansion was razed to the ground. However, dozens of demon emperors had already joined forces to erect a shield to protect their bodies.

The two deputy city lords, however, were so frightened by the sight of the city lord's heroic sacrifice that they trembled and sat down on the ground. This shows that as long as one's heart is still beating, one might cherish life.

Unfortunately, these two deputy city lords were unaware that they could not escape their fate of death.

Twenty Demon Emperors have already stormed into the city to capture Immortal Kings. In an Immortal City that can accommodate over a hundred million people, it's not unusual to find tens of thousands of Immortal Kings inside.

The Demon Emperors were relatively compliant with the agreement, capturing the Celestial Kings first, and then distributing the spoils in a unified manner.

An ancient city with a history of tens of millions of years and beautiful scenery was turned into ruins and corpses scattered everywhere in a series of explosions!

This gluttonous feast not only allowed the Demon Emperor and Demon King to devour their desired flesh and blood, but even the demons at the Great Luo Golden Immortal realm were able to share in some living immortals. As for those below the Golden Immortal level, they could absorb from the corpses on the ground.

Several days after the city fell, a caravan that traded with the city arrived, only to find it in ruins. They then hurriedly reported this to the Allied headquarters.

"Damn it, these bastards actually ran inland! Aren't they afraid of being surrounded and wiped out?"

"This is also a case of our empiricism harming us. There has never been a situation like this before. Just getting from the Jingjue Sea coast to the inland center would take them several years, not to mention having to evade patrols along the way!"

"Elder, I've heard that your Great Hua Imperial Sect has acquired several advanced warships that can enter the void. Why don't you send a few of these warships into the void to search for the demon army's whereabouts?"

"Let me ask the sect leader about this first, since advanced warships require even more top-grade immortal crystals."

Over the past few decades, the Yang family's warships have quietly wiped out three demon armies, not letting a single demon escape, not even the fifteen demon emperors!

The Yang family now has 10 warships sold to the Great Hua Emperor Sect, and 20 warships of their own. Four are stationed in four different locations, and four are left in the main city, so there are 12 warships on the field.

Yang Hongbo had an abundance of top-grade immortal crystals, more than he could ever spend, so the warships he deployed were always hidden in the void.

"Chieftain, we have received news that four armies of the Demon Clan have entered the inland center and attacked a celestial city with 150 million celestial citizens inside."

Yang Hongbo stretched out his hand and drew a line in the air, and a miniature version of the Immortal Continent appeared in the sky, with the route of the attack shown as a red star on the map.

"Can we find the movements of this demon army?"

"It can be done with a little time!"

"Then go find it. Once you find it, assemble twelve warships."

"Yes, Chieftain!"