Lu Qing'an chatted with Murong Qingming for a long time and asked a lot about the situation in Panlong City.

Murong Qingming decided to write down his experiences as the city lord over the years before leaving Panlong City for Lu Qingan's reference.

After the two finished their conversation, Lu Qing'an also prepared to leave and continue to deal with the matters at hand.

The taking over of Panlong City was also after the death of the Demon Dragon, and now he has to prepare to kill the Demon Dragon.

After saying goodbye to Murong Qingming, Lu Qing'an did not return to his residence immediately, but left the City Lord's Mansion and flew out of the city.

He has to go to Shouhuan Pagoda first.

After yesterday's battle, his accumulated lifespan was unprecedentedly abundant, but his remaining sixth-grade immortal treasures were few and far between. If he wanted to completely slay the demon dragon, he would need to detonate many treasures, ensuring a single strike.

Therefore, he had to replenish enough sixth-grade immortal treasures.

After arriving at the Shouhuan Tower, Lu Qing'an exchanged all his life span without hesitation, leaving only a few years to prolong his life.

He did not intend to accumulate his lifespan in advance for the sake of treasures of the seventh rank or above in the future.

Now that the demon dragon is not dead, he needs a large number of sixth-grade immortal treasures before heading to other big cities. He can use these life spans as needed.

In this way, twenty-eight top-grade and unrivaled treasures of the sixth grade of the immortal world were collected by him!

Eight of them are defensive treasures, which raise his defensive capabilities to a higher level!

"Great! This is what I want!"

He was not in a hurry to study the effects of the other treasures, and planned to study them carefully after returning.

He returned to the City Lord's residence and began to carefully study the functions of these treasures.

They were worth a fortune, and he was quite satisfied.

But he still distinguished these treasures and listed those that were of little use to him at the moment for detonation.

"Try to kill the dragon with one blow and don't be stingy with the treasures." He made up his mind.

In the end, he selected fifteen sixth-grade immortal treasures as detonators. The simultaneous detonation of such a large number of treasures would be enough to overwhelm even a Saint Spirit Realm expert!

Not to mention the dying dragon!

"What remains is to set up this formation as quickly as possible." Lu Qing'an took out the seventh-grade immortal fire and the extremely cold treasure, and began to set up the formation according to his previous research.

With all the materials ready, the formation can be set up within a day.

So, Lu Qingjing meditated quietly for a day and finally set up the required formation.

A palm-sized formation plate appeared in his hand.

This array plate is different from ordinary array plates. It emits a blazing red light on the surface. If Lu Qingan had not wrapped his palm with fairy energy, his palm would probably have been burnt.

There was a crackling sound inside the array plate, as if it was freezing.

"Go and test it first to see if you can get close to the seal."

Lu Qing'an was a little nervous. After all, before the experiment, he was not sure whether his formation would work.

So, he quietly left his residence, took advantage of the night, left the City Lord's Mansion, and quietly came to where the magic dragon was. When he appeared in front of the magic dragon, the surrounding environment had not changed at all, and the sealed magic dragon looked even more sluggish.

The dragon is doomed to die.

After Lu Qing'an arrived, he heard the extremely faint curse of the magic dragon again.

However, he turned a deaf ear, took out the formation plate and activated the formation.

When the formation was activated, the formation plate floated in the air, and then a strong light burst out, turning into a hot round ball of light, like a small sun.

Lu Qing'an controlled this special formation and slowly approached the seal.

His face seemed calm under the mask, but his heart was beating fast.

If the formation fails and fails to achieve the expected effect, he will not be able to finish off the dragon and may even lose a lot of his lifespan!

You know, the lifespan brought by this evil dragon may be counted in billions!

The formation gradually approached, and finally came to the range that he could not get close to during the last test.

"It must succeed!" Lu Qing'an muttered to himself.

At this moment, the formation suddenly stopped, and Lu Qing'an felt a tightness in his heart.

Is there a problem?!

Fortunately, just when he thought he was going to fail, suddenly, the light of the formation changed slightly, the whole formation trembled, and then continued to move forward.

At this time, the formation was no longer obstructed and it approached the seal completely. Moreover, it passed through the seal directly, entered the interior of the seal, and came into contact with the body of the magic dragon!

Seeing this scene, Lu Qingan was overjoyed and quickly controlled the formation to fly out.

The formation flew out at an extremely fast speed, passed through the seal again, and returned to him without any obstruction!

"Haha! It's done!" Lu Qing'an laughed heartily and took two breaths before calming down.

Very good! Only waiting for the last moment to come! "

Lu Qing'an closed the formation and carefully put it away.

When the magic dragon is on the verge of death, he only needs to place the explosive treasure into the formation, quickly send it into the seal, get close to the magic dragon's body, and then he can give the magic dragon the final blow.

But he wanted the exact time of the dragon's death.

There can't be any mistakes.

After confirming everything, Lu Qingan called Xu Qingying out of the golden storage bead.

"Do you have any intuition that can accurately determine the time of its death?" Lu Qing'an stared at Xu Qingying with a slight smile on his lips.

Xu Qingying glanced at the ferocious dragon and said, "There are still about five days left. If you are worried that the time is not very accurate, you can come here to guard on the fourth day."

Lu Qing'an nodded, already having a plan in mind.

Then he had to finish his work outside, then come here early and wait quietly.

Believing that there must be special changes around the dragon before it died, he found the right opportunity and dealt the dragon a heavy final blow.

Why did he only take action when the seal was about to kill the dragon?

The main reason was that he was afraid that the dragon had some special means and could withstand his attack.

Then it doesn't count as murder.

After making sure everything was safe, Lu Qing'an left the place where the magic dragon was and returned to the City Lord's Mansion.

Just like that, time passed quietly.

Lu Qing'an had nothing else to do these days, so he rewarded himself by practicing well and waited for the time to come.

His cultivation level is improving rapidly, and he is now at the fifth level of Yuexiao Realm.

But there is still some distance to go before reaching the Tianyan realm.

"This technique is still not advanced enough. I have to find a way to get a more advanced technique when I have time."

He felt that it would be safer to go to the Xianjian Sect after he broke through to the Xuanguan Realm.

"Okay, time to do the big stuff!"

Lu Qing'an was ready to leave the City Lord's Mansion and go to the Demon Dragon to guard it well.

Before leaving, he had to tell Murong Qingming and Bai Lu not to look for him if they had any problems in the next two days.

He was afraid that the two would disturb him, affecting his ability to finish off the dragon and causing him to lose a lot of life.

Coincidentally, just as he took out the sound transmission jade slip to contact Bai Lu, he found that Bai Lu had sent him a message first.

"Friend Jia, we have made a significant discovery! Come to the reception hall immediately to discuss the details!"

Lu Qingan was speechless.

At this time, I found that nothing was useful.

I'm going to do big things.