Amos guessed correctly, Lin Xiao did not flee directly after leaving, but returned to the Golden Island.

One is because he is confident that he will face the siege of seven people, and on the other hand, it is impossible for him to give up the territory he has worked so hard to develop and find a place to hide, which is not his style.

Anivia's speed was very fast, and in less than a day, it returned from the core sea, the center of the world, to the golden island in the marginal sea.

According to Lin Xiao's estimate, if others want to come over, it will take more than three days at the fastest speed.

Lin Xiao has plenty of time to calmly open the treasure chest that has arrived, and there is no need to worry about the opponent chasing after him in advance, if there is any powerful weapon in it, or it is a inheritance, maybe it can also help in the upcoming battle.

He was looking forward to the treasures in the treasure chest.

After returning to the Golden Island, Lin Xiao found the girl who was in the rune laboratory and dragged him to the secret room of the lord's mansion. If you want to open these rune treasure chests, you naturally can't do without the help of the girl. With the girl's rune attainments today, it is more than enough to open a few treasure chests.

Unleashed from the spatial ring, hundreds of treasure chests filled most of the huge underground chambers, making the originally dimly lit chambers instantly become golden and dazzling.

"There is an undersea ancient city in the core sea area, these treasure chests are all excavated from inside, you try to unlock their rune locks, these treasure chests, there should be some extremely precious treasures. Lin Xiao briefly explained the process.

The girl was originally doing an experiment, but was pulled over inexplicably, seeing these hundreds of treasure chests, listening to Lin Xiao's narration, she was still in a state of confusion. It wasn't until Lin Xiao finished speaking that she reacted slightly, took a deep breath, and nodded, "Okay, I'll try." ”

Under Lin Xiao's gaze, the girl stepped forward to check the rune locks of the rune treasure chest one by one, and after looking at about a dozen, a smile appeared on the girl's face: "Brother, these rune locks are not very difficult, they should be able to be solved quickly." ”

Sure enough, Lin Xiao was also very happy, as long as it was in terms of runes, the girl had never disappointed him.

"So, let's get started now, we need to open all the chests as soon as possible. ”

The girl nodded, and she didn't see her use any tools to directly carve runes in the void, one by one to try, test, and finally use the most suitable rune combination to open the rune lock.

Each one takes very little time, just a few minutes.

And the further you go, the faster it gets.

According to the girl's explanation, it is because although the rune locks of these treasure chests are different, they are all of the same type, and the principle is the same.

Just like the locks on the earth, they are divided into mortise door locks, drawer locks, bullet door locks, fingerprint locks, combination locks, etc., which are very different from each other, but the same type of lock, the principle is basically the same.

The more the same kind of lock is opened, the speed will naturally become faster, not to mention, the girl knows exactly how they work.

A few hours later, Amos and the others would never have thought that all the treasure chests they had at their fingertips had been opened by Lin Xiao.

The rune lock has been unlocked, Lin Xiao drove Yuan Li to wave, and all the box lids were opened at the same time, and for a while, the entire secret room was not only brilliant, but also colorful, a strange scene. Not only that, the rich Yuan Force almost formed a storm, and even condensed into a drop of water suspended in the air, just by taking a breath, you could feel the bottleneck in your body being ready to move.

Lin Xiao felt that after practicing in such an environment for a few days, he might be able to break through to the earth level in one fell swoop.

"Brother...... Brother, these are all extinct materials, many of which I have only seen in ancient books, with these materials, not only can rune research take a big step forward, even the materials of the dragon pattern mecha do not need to be replaced, we can use the best materials to make a strongest dragon pattern mecha. The girl's mouth grew wide, and she was completely stunned by what she saw.

Even if I discovered the undersea demon world and saw the space barrier before, I was not surprised by the materials in these treasure chests.

"And...... It seems that most of the materials in this can be used as materials for territorial promotion!"

"That's right. Lin Xiao smiled and nodded. In fact, after the treasure chest was opened, he discovered this as soon as possible. The main reason is that for a long time, he has been trapped in the promotion materials, and he almost memorized those materials clearly in his heart, so he recognized them as soon as he saw them.

"In other words, we can be promoted?" the girl felt a little confused.

Ever since the Immortal River Leader was promoted to the city level, the promotion to the main city has been on the agenda.

But after so many years, just the first step of collecting promotion materials has blocked the Immortal River Collar from the door, and the progress has not been great. In the recent war, many city-level territories have been conquered and many treasure troves have been looted, but the promotion materials have not increased much at all.

I thought that the promotion would be stumped, and everyone was mentally prepared, after all, there are so many city-level territories in the Star Domain World, but the main city has always been seven, and it has not changed for ten thousand years.

But what she didn't expect now was that this seemingly most difficult problem would seem so easy to solve.

The girl felt a feeling of excitement surging in her heart.

Not to mention that the promotion of the territory is the most anticipated thing for the entire Xianhe Territory, including the lord Lin Xiao and her, just when she was promoted to the crystal tablet, the help for the understanding of the runes made her infinitely useful. With the experience of the previous two times, she knew very well that the higher she was promoted, in addition to the promotion of the crystal tablet, the improvement of the generality of the people will become stronger and stronger, and the improvement of the understanding of runes will also become stronger and stronger.

Although her runic ability seems to be as high as the sky now, the more she goes up, the less guidance and reference she can provide, and her ascension is getting slower and slower. At that time, many problems that were previously unthinkable, or some incomprehensible problems in the use of spatial runes, may be solved.

Therefore, whether or not she can be promoted to the main city is not only crucial for the territory, but also for her personal promotion.

"That's right, we can start now. Lin Xiao said with a smile on her face. After inspecting all the treasure chests, he found that not only were the materials for upgrading to the main city complete, but there were also a large number of leftovers and other materials, so that the promotion of the territory could be carried out at any time.

"Great, we've waited too long for this day!" the girl clapped her hands excitedly.

"yes, it's been too long. Lin Xiao nodded with emotion.

In the first year of the Xianhe calendar, Xianhe was promoted to the town level.

Xianhe Ling has been in the league for 5 years, and Xianhe Ling has been promoted to the city level.

Now, it has been 15 years of the Xianhe calendar, and it has just gone through the first five-year plan.

On this day, it was also the 15th year after he descended into the Star Domain World, and he finally saw the dawn of the Immortal River Lord's promotion to the main city.