Cave Refuge

While Dong Tianyu was working hard outside, his family had also managed to settle down in the Refuge Center.

Looking at the survival points that no matter how they absorbed or decomposed wouldn't decrease, Dong Tianyu knew that he hadn't found some necessary upgrade elements. He guessed that these upgrades might need some mysterious items which couldn't be obtained in the outside world, so they had to be compensated by using survival points.

Fortunately, after the reduction, it only required 500 survival points. By absorbing four points a day, until now, enough survival points have accumulated for the upgrade.

With Dong Tianyu choosing to upgrade the Refuge Center level, an invisible wave, like throwing a stone into a pond, spread from the center to the outer edge of the cave mansion, after the collision with the edge, it rebounded back to the center.

This process continued for a long time, and each collision with the edge of the cave mansion caused it to expand a little bit more.

The upgrade process of the cave mansion took a long time. Dong Tianyu, unable to wait anymore, did not dare to practice in the Hall of Longevity, fearing an accident. He could only rest in his room first.

When he woke up, the cycle of pulsation that occurred during the upgrade in the cave mansion disappeared. At this time, the upgrade of the cave mansion was successful.

Stepping out of the room, the original cramped space had become much more spacious. Seeing this, Dong Tianyu knew that the Shadow Space must have expanded a lot. He put the clothes and big bags originally stored in the cave mansion into the Shadow Space.

After cleaning up those annoying things, the cave mansion now returned to the rustic and antique feel of a small cottage surrounded by half an acre of good farmland.

Well, assuming that you can automatically block out the sight of large greenhouses and fully automatic breeding equipment.

Cave mansion: Peach Blossom Paradise

Owner of the cave mansion: Dong Tianyu

Cave mansion level: Medium size

Survival points: 210 (5/each day)

Cave mansion area: 100*100 (height 20 meters)

Inherent skills: Transformation (using survival points to transform technical items in the cave mansion into mysterious items)

Parallel space: It has a parallel space the same size as the cave mansion. Time is frozen in the parallel space and living things cannot be stored.

Ability: Absorption (absorb items in the cave mansion to enhance the foundation of the cave mansion and reduce the prohibitive cost of building upgrades) Shadow Copying (After leaving the cave mansion, you can open Shadow Space, the straight-line distance equals the length, width, and height of the cave mansion)

Spirit Vein level: Medium size

Spirit Vein characteristics: Stability (reduces the influence of earthquakes on the cave mansion), Medium resource area (can produce various minerals every year, with a chance to give birth to energy minerals)

Spiritual Spring: Makes the spirit energy in the cave mansion more active. When the density of the spirit energy in the cave mansion reaches a certain level, condense the spirit energy to obtain a Spiritual Energy Crystal.

Hall of Longevity (elementary level): Transference (Introduce Qi), Spirit Gathering Formation (Enhances the speed of cultivation), Clear Mind (Reduces the chance of going into demonic trance).

The information on the data layout made Dong Tianyu feel incomprehensible. Comparing the data before the upgrade, the biggest change should be the area of the cave mansion.

It has been upgraded from small size to medium size, and the space in the cave mansion is now eight times the original size.

The word "primary" in basic absorption has disappeared. Previously, the absorption and decomposition of resources could only absorb and decompose ordinary items. Now, by removing the word "ordinary", it theoretically works for all things.

Originally, after absorption and decomposition, it could only reduce the survival points needed for the upgrade of the cave mansion. Now, it can reduce the survival points of all the buildings in the cave mansion, resulting in a super-doubling in terms of practicality.

Perhaps because too many metal products were absorbed, after the upgrade of the Spirit Vein, it skipped the small resource area and directly turned into a medium resource area with more mineral resources produced each year.

At the beginning, Dong Tianyu didn't know much about the resource area shown on the Spirit Vein. After this upgrade, the System had a more detailed introduction to the Spirit Vein.

The Spirit Vein could be described as the core of the cave mansion and a requirement for establishing a cave mansion.

Normally, a cave mansion should be established after the situation of the Spirit Vein was confirmed, because the Spirit Vein is usually unable to upgrade, so most people who establish cave mansions would choose places with Spirit Veins to establish their cave mansions.

Doing this has the advantage of providing a great return for the owner of the cave mansion early in the establishment process. The downside is that it determines the level of the cave mansion at the beginning of its establishment.

Under normal circumstances, it's very hard to upgrade a cave mansion, because it's very difficult for a normal Spirit Vein to upgrade. But due to some people mining Spiritual Stones for profit, it constantly lowers the concentration of spirit energy, leading to a downgrade of the Spirit Vein.

This situation only changes if the cave mansion is transformed into a Cave, which is similar to an independent space, where powerful beings can plunder Spirit Veins from the outside world, enhancing the level of the Spirit Vein inside the Cave.

Seeing this, Dong Tianyu actually had some ideas. His cave mansion can be considered a youthful version of a Cave.

At this time, the cave mansion had been cut off from the outside world and belonged to an independent space. The cave mansion was established on the Spirit Vein, but the Cave incorporated the Spirit Vein into it.

The Spirit Vein is a higher-level existence than the Spirit Vein, so although there is no Spirit Vein in the cave mansion now, according to the current situation, as long as the cave mansion continuously upgrades, the Spirit Vein will eventually turn into a Spirit Vein.

The biggest difference between the Cave and the cave mansion is actually still the Spirit Vein. Under normal circumstances, if there is no external influence, the Spirit Vein will continuously absorb unknown energy to upgrade itself. Of course, this process takes a very long time.

The Spirit Vein inside a Cave can also absorb that kind of unknown energy, not only can it upgrade the Spirit Vein level, but it can also produce various deposits within the Spirit Vein. The higher the level of the Spirit Vein, the more deposits it can produce. As long as you manage the mining progress well, you can continue to produce them.

Of course, many builders of Caves, at the very beginning, would bury the deposits obtained from the outside world into the Spirit Vein to speed up the upgrade of the Spirit Vein.

These days, Dong Tianyu has been decomposing and absorbing various materials, most of them are used to offset the consumption points required for the upgrade, but a part of them is integrated into the Spirit Vein, which has enhanced the source of the Spirit Vein in the cave mansion.

So after the upgrade, the appraised rating of the resource area in the Spirit Vein has been promoted by one level, jumping directly from small to medium size.

Now that the area of the cave mansion had become larger, Dong Tianyu's first reaction was whether to bring his parents over to live. But even though the area of the cave mansion had become larger, if people were really invited to live in it, Dong Tianyu would prefer to live alone with his parents.

You can't say that Dong Tianyu is heartless. Although the level of the cave mansion is upgraded and the space of the cave mansion has become larger, the materials prepared in advance are still the same and have not increased.

Although Dong Tianyu was preparing to go out to collect materials again, if dozens of family members were brought over, it would be very troublesome.

If only part of them were brought in, whether they were brought in or not, they would complain about Dong Tianyu. Therefore, Dong Tianyu planned to find an opportunity to enter the subway station refuge center and ask his father's opinion.

Although the space of the cave mansion had increased eightfold, the ground area had only increased fourfold. Regarding these newly acquired places, Dong Tianyu also had many new ideas.