Billy, the big boss of the Deep Sea King Capital, has been killed by Lin Yuan.

However, there are still many undead under him, lurking all over this deep sea king capital, so you still need to be careful when searching for hidden rewards.

Otherwise, it would be troublesome to be injured by the undead and infected with the undead virus.

After listening to Lin Yuan's instructions, the four of them nodded, and each went separately to search for rewards in this royal capital.

When Lin Yuan killed Billy before, although he received a study note that recorded the Forbidden Spell of the Undead Scourge, no one would dislike the rewards he had obtained, and he glanced at the key in his hand that he had obtained from killing the Mermaid Mage before.

The key to the royal treasury [can be used to open the hidden treasury of the royal capital]

Although Billy has turned the Deep Sea King Capital into his private territory, he is only one person after all, and he has only scavenged some of the benefits on the surface of this royal capital, and there are still many things hidden that have not been discovered.

For example, the key in Lin Yuan's hand is one of them.

Lin Yuan took the key in his hand that had just identified the attributes, and walked around the royal capital with his intuition, and finally resonated in an abandoned mansion next to the original palace.

Circles of invisible ripples rippled on the key, and finally resonated with the magic circle of the treasure house, teleporting Lin Yuan into it.

In the midst of the treasure trove, there is a bright place.

A large number of luminous pearls illuminate the treasure house as if it were daylight, and in this treasure house, in addition to the night pearls, there are also a lot of elemental ores and some precious medicinal materials that only grow on the bottom of the sea, as well as some weapons and armor.

Looks like this should be the mermaid mage's private little vault?

After a little identification, Lin Yuan found that these ores and medicinal materials were still well preserved, and the portions were also full, if they were sold, they could be exchanged for at least two or three hundred thousand star coins, and the weapons and armor were all very ordinary, without any additional attributes, but they were worthless.

However, in this deep sea where forging materials are lacking, these things may still be valuable.

"Forget it, it's better than nothing. ”

Lin Yuan put the Night Pearl and the ore medicinal herbs into his backpack, and looked through those ordinary weapons and equipment without giving up, trying to find one or two of the best products buried in the ordinary equipment, but this naturally did not exist.

However, I didn't find any good equipment, but I found a box from under the pile of weapons and equipment.

The box looked ordinary, without any gorgeous decorations, and Lin Yuan didn't have much hope to open the box, but found a drawing from the box...

Deep Sea Enchantment Drawing [Isolate the sea water in the deep sea and forge the necessary enchantment for the city, this drawing records the detailed casting method. 】

Looking at this drawing, Lin Yuan smiled, thanks to his attentiveness, he rummaged through the pile of broken copper and iron without giving up, otherwise he would have really missed it.

After the opening of the astral plane, the infinite matter and plane of the metaverse have all been fused into one furnace.

In this new world, all races except their own race are enemies and competitors.

What is most important in this case? Strength, of course.

And if you want to increase your strength, in addition to the birth of elite masters from the existing population of your own race, the number of people is also a very important factor, which means the future of a race.

You are an ordinary human being, and you don't have the qualities to be a strong person, either physically or mentally, so that's okay.

As long as you are willing to take on the responsibility of reproduction, you may be able to produce a gifted person who will make a great contribution to the entire human civilization.

Because of this, the internal atmosphere of human civilization in the future has always been to encourage childbearing, and unmarried young men and women of appropriate age who have not even become soldiers will be forced to arrange blind dates to find a suitable other half to form a family.

And if a civilization wants to support a huge population, it needs a lot of resources just to keep them alive, let alone make them stronger.

In this period when the astral boundary is beginning to open, human beings do not yet have the ability to transform the territory of other civilizations around them, so it is very important to strengthen the utilization of resources within the civilization territory.

With this blueprint of the deep-sea enchantment, then human steps can not be limited to the ground, but also build cities in the sea, and even everyone lives on the bottom of the sea, and use all the space on the ground to grow crops.

In addition to these benefits, placing the city on the bottom of the sea can also effectively protect ordinary people who have no combat effectiveness, and prevent the tragedy of countless ordinary people who are innocently killed in the event of a race war.

Human civilization has been doing this kind of thing in the previous life, but by scientific and technological means, and when it really reached the point of ocean development, it was already a hundred years after the opening of the astral boundary.

And in this life, with this drawing, which is extremely simple to use, then the pace of marine development can start in advance.

"It's better to be bold and careful. ”

When he teleported out the hidden treasure house of this royal capital, a smile appeared on Lin Yuan's face, and he was already thinking about how many resources he could exchange for from the government with this drawing, although this drawing was not as important as the D7 manufacturing drawing, but it was also precious.

Lin Yuan had delayed a lot of time when he searched for the coordinates of the treasure house before, and he wasted a lot of time checking the harvest in the treasure house, and when Lin Yuan came out, Lu Mingxue and the others were already waiting for him.

"Captain, what did you get, so happy?" Seeing Lin Yuan's smile on his face, he was obviously in a good mood, and asked with a smile.

"Good thing, I'll give you dividends when I go back. ”

Lin Yuan said with a smile, but he didn't explain anything, and asked rhetorically by the way: "What did you get?"

Lu Mingxue raised a stack of books in her hand, some water-based spell books found from a mermaid mage's mansion, but they were not skill books, and if you want to learn them, you need to take time to comprehend them.

Yu Yue found a bunch of big pearls from deep sea specialties, according to her, the effect of using them for beauty and beauty was very good, while Qin Zhaochuan didn't find anything, and in line with the concept of thieves not going empty, he went to catch a few big super lobsters.

Swimming found a lot of cultivation materials for necromancers from the necromancer's laboratory, which of course did not include how to plunder other life essences to increase lifespan, and the content about this part had been destroyed by Lin Yuan.

Lin Yuan didn't memorize this part, it was unnecessary and disdainful.

Whether it is a level increase, or cultivating the bloodline to an extremely high level, or some heaven and earth elixirs, you can increase your lifespan.

It is no joke to plunder the essence of other lives, firstly, to damage the foundation, and there will be many troubles, and secondly, it will hurt the peace of heaven and be easily punished by heaven.

"Let's go, go back. ”

Coming to the secret portal, Lin Yuan beckoned, and the group stepped in.