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

Since the Immortal Clan army occupied a city and began to establish a bridgehead for the counterattack against the Demon Clan continent, the Demon Clan has also begun to constantly send troops to harass them.

Because every time they came to harass the demons, they found that the immortal army only sent about ten million troops to fight against the demons. Moreover, the immortals' flying ships and warships ignored their two or three million troops, did not fire a single shot, and just watched their troops crush the demons.

The Demon Emperor on the Demon Clan's side got really angry and increased the number of troops sent to attack to twelve million. "You Immortal Clan will contribute ten million, and we Demon Clan will contribute twelve million. Now your spaceships and warships won't be idle, will they?"

Inside the council hall of the demon clan's stronghold, the atmosphere was so oppressive it seemed like water could be squeezed out of it. Several demon emperors sat around a huge black stone table, each with an expression of anxiety and resentment on their face.

"These Immortal Clan warships are simply an insurmountable obstacle!" A burly, fleshy demon emperor slammed his fist on the table and roared, "Every time we send out a large army, they hide in the void, occasionally popping up to fire a few shots. We have absolutely no way to deal with them!"

Another Demon Emperor, thin and with sinister eyes, sneered and said, "Hmph, so what? We've dispatched an army of twelve million this time. I don't believe they can remain indifferent. Once their warships and airships are deployed, we can take the opportunity to find their weaknesses."

"Weaknesses? Easier said than done!" A female Demon Emperor frowned, looking worried. "When these warships disappear into the void, we have no way of detecting their location. By the time they launch an attack, we have often already suffered heavy losses. Moreover, their crystal cannons are extremely powerful, and our defensive formations are simply no match for them."

At this moment, the black-robed elder, who had been silent all along, slowly spoke: "Fellow Demon Emperors, do not be anxious. Although we are currently helpless against the Immortal Clan's warships, everything in the world has its counterpart, and there will always be a way to break this cycle."

"Elder, what are your thoughts?" a Demon Emperor asked eagerly.

The black-robed elder stroked his beard and slowly said, "We can approach this from two angles. First, we can study the characteristics of the void and find a way to detect the location of warships in the void. As long as we can detect their tracks in advance, we can prepare our defenses and even launch a counterattack."

"Secondly, we can look for defensive measures that can counter crystal energy cannons. Perhaps we can collect some special materials to create a defensive shield that can withstand crystal energy cannon attacks. Or, we can research a spell that can interfere with the firing of crystal energy cannons, preventing them from using them normally."

The demon emperors nodded in agreement upon hearing the black-robed elder's words. But soon, someone raised a question.

"Elder, researching the characteristics of the void and finding a way to counter the crystal energy cannon requires a lot of time and resources. But the Immortal Clan army won't give us that much time. They have already established a foothold on our territory and could launch a large-scale counterattack at any time," a Demon Emperor said worriedly.

The elder in black robes smiled slightly and said, "I am naturally aware of this. Therefore, we cannot sit idly by during this period. We can continue to send out small groups to harass the Immortal Clan army, depleting their strength and resources. At the same time, we can also set up some deceptive traps and disguises on the Demon Continent, so that the Immortal Clan army cannot figure out our true intentions and troop deployment."

"In addition, we can try to form alliances with some other mysterious forces. Perhaps they have a way to help us solve the problem of the Immortal Clan's warships," the black-robed elder added.

After listening to the black-robed elder's suggestion, the Demon Emperors began a heated discussion.

"I think the elder's suggestion is feasible. We can immediately organize a group of demon cultivators to specialize in studying the characteristics of the void and methods to counter the crystal energy cannon. At the same time, we should increase the improvement and upgrading of our existing defensive formations to enhance our defensive capabilities," said a demon emperor.

"Yes, we can also send some elite spies to infiltrate the Immortal Clan's army and gather intelligence. We can learn about the specifics of their warships and spaceships to provide a reference for our subsequent operations," another Demon Emperor suggested.

"Alliance can also be pursued simultaneously. We can send envoys to seek out mysterious forces that might be of help to us. However, we must be careful in choosing our allies to avoid inviting trouble," the female demon empress said cautiously.

Just as the Demon Emperors were discussing animatedly, a demon cultivator rushed in, knelt on the ground, and panted, saying, "Report...Reporting to the Demon Emperor, the twelve million troops we sent to attack the Immortal Clan army encountered fierce resistance from the Immortals. Their warships and flying ships have indeed been deployed, and our troops have suffered heavy losses. The Immortals have now begun their retreat."

"What?!" Upon hearing this news, all the Demon Emperors stood up, their faces showing shock and anger.

"Just as we expected, the immortal race dispatched warships and airships as soon as they saw us send out a large army," the burly Demon Emperor said through gritted teeth. "However, we can't let them get away with this. Issue my order for our air force to immediately set out and pursue those retreating immortal forces, to teach them a lesson."

"Wait!" the black-robed elder hurriedly stopped them. "If we pursue them now, we might fall into the Immortal Clan's trap. Their warships and spaceships have vanished into the void, making it difficult for us to track them down. Moreover, they have a clear advantage in aerial combat, and our air force may not be a match for them."

"Are we just going to stand by and watch our troops be defeated?" the burly Demon Emperor asked unwillingly.

The black-robed elder pondered for a moment and said, "We can send a portion of our air force to follow them from a distance and observe their movements. At the same time, we should have our ground forces prepare for defense to prevent the Immortal Clan army from taking advantage of the situation to pursue us."

The demon emperors listened to the black-robed elder's words and found them reasonable, so they all nodded in agreement.

In the days that followed, the demons, following the advice of the black-robed elder, organized their forces to study the characteristics of the void and methods to counter the crystal energy cannons, while continuing to send small groups of troops to harass the immortal army and strengthening their defenses over the demon continent.

However, the immortal army did not seem to be in a hurry to launch a large-scale counterattack. They continued to hold their defensive line, occasionally sending out troops to engage small groups of demons in battle, honing their combat skills.

This left the demon race's higher-ups quite perplexed.

"What exactly is the Immortal Clan up to?" a Demon Emperor asked, frowning. "They've occupied our cities, yet they haven't launched a large-scale counterattack. Are they waiting for some opportunity?"

"No matter what they're up to, we can't let our guard down," the black-robed elder said solemnly. "We need to speed up our research and find a way to break the Immortal Clan's warships as soon as possible. At the same time, we must strengthen our defenses to prevent the Immortal Clan army from launching a sudden attack."

Just as the demons were racking their brains trying to solve the problem of the immortals' warships, a heated discussion was taking place within the immortal army.

"Clan leader, we now have a favorable position. Why not take this opportunity to launch a large-scale counterattack and defeat the demons in one fell swoop?" a disciple of the Yang family asked.

Yang Hongbo shook his head and said, "Now is not the time. Although we currently have some advantages, the strength of the Demon Clan should not be underestimated. They have many Demon Emperors and countless experts. If we rashly launch a large-scale counterattack, we may very well fall into their trap."

"Furthermore, while our warships and airships are powerful, they also have certain limitations. Entering the void requires a large amount of energy, and firing the crystal cannons also requires a large number of top-grade immortal crystals. If we fight on the Demon Continent for a long time, the supply of these resources will become a problem," Yang Hongbo added.

Although Yang Hongbo possesses a great many top-grade immortal crystals and divine crystals, they are still his own; he cannot allow these people to develop a lazy mindset!

"Then what should we do? Are we just going to stay in this stalemate?" another elder from the Great Hua Imperial Clan asked.

Yang Hongbo smiled slightly and said, "Of course not. While holding our defensive line, we can continue to expand our advantages. On the one hand, we can increase our reconnaissance efforts on the Demon Continent to understand their troop deployments and strategic intentions. On the other hand, we can continue to train our people and disciples to improve their combat capabilities. When our strength is sufficient and our resource reserves are abundant enough, that will be the time for us to launch a large-scale counterattack."

The high-ranking members of the Immortal Clan nodded in agreement upon hearing Yang Hongbo's words. They knew that patience and wisdom were equally important in this war against the Demon Clan. Only with thorough preparation could they deliver a fatal blow to the Demon Clan at the crucial moment.

Meanwhile, at the Demon Clan's stronghold, the Demon Emperors were still racking their brains to solve the problem of the Immortal Clan's warships. They tried various methods, studying the characteristics of the void, improving defensive formations, and seeking alliances with mysterious forces, but none of them made any substantial progress.

"Is there really no way to solve the problem of the Immortal Clan's warships?" a Demon Emperor said in despair.

A group of dejected demon emperors wailed, "Good heavens! Are we all idiots?"