Originally, Lin Dong's plan was to use up all the buffer time. After a month of cooling down, he would once again enter the alternate space battlefield.

After obtaining sufficient source points, it was necessary to repair and change the name of the battleship.

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Originally, he thought that he would need to spend a few months to obtain the source points. However, he did not expect that in less than a day, he had completed the 2 goals of repairing and changing the name of the battleship.

Moreover, after upgrading the armor and detection radar modules to LV2, the Black Dragon's main cannon, armor, engine, and detection radar modules all reached LV2.

The Black Dragon's overall combat strength rating also rose to LV7!

The basic information of the battleship would be changed from Black Dragon (LV6) to Black Dragon (LV7).

It was safe enough at the moment.

Since the development was smooth, there was naturally no need to give up the battleship. After obtaining a better 1st generation Spark battleship, the Black Dragon could adjust according to the situation.

Compared to the Black Dragon, which had a comprehensive evaluation of LV7, and the Black Dragon, which had a comprehensive evaluation of LV6, they were completely different battleships.

Lin Dong had spent 1,300 source points in one go. According to the average speed of obtaining source points, it would mean a span of at least a few decades to obtain 1,300 source points.

With this change, a sufficient boundary was drawn between the Black Dragon and the Thunder Flash.

A gap of a few decades.

After returning to the original universe, no one would think of the Thunder Flash.

However, Lin Dong did not continue to strengthen the standard module.

The Black Dragon, which had an overall combat power rating of LV7, was sufficient to be used in the current alternate space battlefield.

After the Spark battleship's overall combat power rating exceeded LV10, its opponent in the alternate space battlefield would no longer be a rank 1 interstellar civilization. There was even a chance of encountering a rank 3 interstellar civilization.

As the level of a civilization increased, the threat it posed would also increase by a large margin.

Therefore, for the sake of safety, Lin Dong would temporarily not improve the Black Dragon's overall combat power rating.

The next thing he needed to do was to carefully hide and not involved himself in fights.

Lin Dong was extremely satisfied after recalling his gains this time around.

He glanced at the time. The alternate space battlefield was about to end.

After mining for a day, he had entered the alternate space battlefield for 24 hours. Although he had rested for a while, his physical strength and spiritual energy had yet to completely recover. Hence, his body was quite tired.

After all, there was no meditation technique that could strengthen his body.

As time gradually passed, Lin Dong did not activate the exterior simulation this time around.

The buffer time for the exterior simulation was 24 hours, which was equivalent to the duration of the alternate space battlefield.

Lin Dong had activated the exterior simulation when he entered the alternate dimension battlefield. However, the buffer time had to be calculated from the time when the battleship exited the exterior simulation. Hence, there was still some time before he could use the exterior simulation.

If the 2 of them were perfectly synced, it would be even more stealthy if he maintained the simulation state and exited the alternate dimension battlefield.

The buffer time would be reduced after he upgraded it.

However, Lin Dong was not worried at the moment.

As the original appearance, name, and overall combat power of the Thunder Flash were all different, the uneasy feeling that lingered in Lin Dong's mind had long gone.

Even if the Black Dragon, which was unable to maintain its simulated state, was exposed to the public, it would not be a big deal.

Lin Dong only needed to conceal his identity as the commander of the Black Dragon.

Soon after, the 24 hour duration of the alternate space battlefield came to an end.

Unlike when he entered, there were no abnormalities. The Black Dragon's figure swiftly faded away in the alternate space.

The feeling of dizziness once again assaulted him. In the next moment, the Black Dragon quietly appeared in the original universe.

It was as though no one had noticed it when Lin Dong left.

After recovering from the dizziness, Lin Dong began to check the Black Dragon.

He appeared not far from the point where he entered the alternate space battlefield. After exiting the alternate space battlefield, it would usually appear near the entry point. However, it would not be completely same.

Spark battleship LV7 (Black Dragon):

Standard main cannon (Green)(LV2). Standard armor (Green)(LV2). Standard energy shield (LV2). Standard detection radar (LV2). Standard engine (LV2). Standard ship structure (Green)(LV0).

All spark status: Buffering (696 hours).

Additional modules: Space jump device (Purple)(LV0). Exterior simulation (Gold)(LV0).

Remaining source points: 674. Source point acquisition rate: 25%.

Main cannon ammunition: 3 rounds. Secondary cannon ammunition: 1,105 rounds. Remaining energy: 987. Daily necessities: 392 units.

Armor damage: 30%. Ship damage: 5%.

The damaged parts of the armor were not visible on the surface. Without internal inspection, it would be impossible to tell. The same was true for the hull.

Lin Dong did not choose to repair it. Instead, he waited for the Spark battleship to repair itself.

Under normal circumstances, the hull damage of the Spark battleship would gradually recover over time. This was one of the differences between Spark battleships and ordinary battleships.

If the armor was made of memory metal, the internal damage would also recover.

The memory metal happened to be used on the damaged parts.

This was also the rarity of memory metal.

Following which, Lin Dong tapped on the optical computer and looked at the miniature reactor that he had set up previously.

Although the reactor was not very convenient, it was not easy to discover and could be checked from a distance.

It was impossible to trace it through the reactor. Instead, it would expose Lin Dong's movement path. The only drawback was that there was no image.

Through the movement path and the reactor, Lin Dong was able to determine that no spaceship or battleship had approached the area and nothing unusual had happened.

Lin Dong relaxed. He piloted the mining spaceship and left the Black Dragon.

He changed his identity from a commander to a miner in an instant.

Then, he concentrated on mining.

While doing so, he searched for traces of the mineral crystals.

Out of the 5 units of low-grade mineral crystals that he had originally obtained, 1 of them was consumed when the personal support system to capture alternate space signal.

Only 4 units of low-grade mineral crystals were left. A portion of them had to be used as a reserve energy source.

If he used too much mineral crystals, it would not be good for him.

Over the next 10 hours, he searched for mineral crystals while mining. Unfortunately, he did not find anything.

Mineral crystals relied on luck. Hence, he could only rely on luck to find them.

Although Lin Dong had spent time searching for mineral crystals, he might not get anything.

However, Lin Dong was not in a hurry. He still had enough low-grade mineral crystals. He only wanted to find more so that he would have more confidence in himself.

If it really did not work out, he could use some money to get low-grade mineral crystals.

He could get 1 or 2 units of mineral crystals. If Lin Dong gave them a good excuse, the people would not suspect him.

For collection purpose was a good excuse.

Lin Dong piloted the mining ship back. After handing over the collected minerals, he returned home to rest.