I chose the safe house, and the Human Alliance regretted it.

"Continuous promotion"

Wang Wei directly elevated the field of safe houses.

The larger the safe house area is when facing endless star beasts, the more efficient he can be at harvesting them.

The boundaries of the domain expanded instantly under the starry sky!

The original area of ​​more than seven million square kilometers has increased countless times in an instant.

Wang Wei looked at the newly upgraded safe house:

Safe House (Growth Type)

Rating: Supreme

Combat Power: +∞

Function: Activating the innate ability, it can create an absolute safe zone within an area of ​​742436719 square kilometers. Within the safe zone, the host is in an absolutely invincible state.

Superpower:

Insight – The host can gain insight into the personal information of all targets within the safe house's perimeter.

Reflection – The host can observe the scene within a certain range outside the safe house in real time, and the range increases as the safe house advances.

Shapeshifting—the host can change the shape of the safe house.

Energy Transfer – The host can remove the superpowers of targets within the safe house area and transfer them to other targets, causing them to awaken the corresponding superpowers.

Limitations: Safe houses cannot be moved in real time; the lifespan of a safe house is 129600 years; and the ability can be used every 1 day.

Details: Upgrading requires 742400 trillion security points.

Remaining safe points: Very few have been ignored

742436719 square kilometers!

Wang Wei was startled.

The safe house's area of ​​effect can now completely encompass his little world!

Wang Wei looked at the Starry Sky Beasts under the starry sky. The Star Beast King had been killed, and the beast tide had not yet recovered from its daze.

Wang Wei raised his right hand, and the robbery sword appeared in his hand.

"This sword strike is named—Settling the Matter."

Wang Wei's voice echoed throughout all the consciousnesses of the Kailo race behind him.

This was also said to the Kailo people.

As soon as he finished speaking, the blade of the Robber Sword burst forth with endless light.

Light burst forth from the sword tip, spreading across the starry sky like a flood bursting its banks.

The sword light stretched from tens of millions of kilometers to hundreds of millions of kilometers, filling the entire domain!

Where the sword light passed, the starry sky was dyed a dark gold, like a galaxy flowing in the universe.

"This sword!!!!"

All the consciousnesses of the Kailo race were shocked.

They had never seen such a massive sword light, stretching across billions of kilometers of space, like a light that had existed since the beginning of the universe.

Wang Wei smiled and raised his sword to strike!

The remaining star beasts didn't even have time to feel fear—the sword light had already swept across their bodies.

Wherever the sword light passed, the beast tide vanished in swathes, like the rising sun dispelling the darkness.

Wang Wei sheathed his sword.

All sounds are silent.

The Kailos fell silent.

Under their perception, this sword annihilated all the star beasts they could sense!

However, Wang Wei frowned.

Even at the edge of the starry sky, a terrifying aura still stirs.

Under his light, a massive number of strange beasts continued to arrive.

"Wait for me," Wang Wei said before disappearing into the starry sky.

A deathly silence lingered for a long time within the Kailo fleet.

The silence was broken when a consciousness broke through: "He... went to the Star Beast's lair?"

No one can answer, because they don't know the answer.

"wait....."

.......

It wasn't until more than ten days later that Wang Wei returned from the depths of the starry sky.

He was dressed in clean black clothes, exactly the same as when he left.

Wang Wei looked at the Kailo fleet and said, "It's time to pay."

After a brief silence, a deep, muffled consciousness spoke: "Shopkeeper, please come with us."

A starship sailed up in front of Wang Wei, and the hatch opened automatically.

Wang Wei stepped inside.

Moments later, the Kylo fleet turned back in unison.

The fleet traversed an entire star system before finally arriving at the ancestral planet of the Keloid silicon-based race.

Looking up, Wang Wei saw that the ancestral star of the Kailo people resembled a huge purple crystal, suspended in the starry sky.

Countless fine light veins flow slowly inside, like blood vessels or electrical circuits.

The entire planet's surface is as smooth as a mirror, without any undulations or textures, like a work of art sculpted to perfection.

The consciousness of the Kylo race is already waiting on the planet's surface.

A consciousness attached itself to a small shuttle. "Shopkeeper, this is our ancestral planet."

The shuttle announced, "All the energy fluid is stored inside the planet."

Wang Wei remained silent.

His gaze swept across the surface of the purple crystal, reflecting the interior of the planet.

Even Wang Wei was secretly startled.

Inside the sphere, an "ocean" formed by the convergence of liquid energy is churning, like the slow beating of the planet's heart.

"I'll take the shop owner there."

"No need," Wang Wei refused directly, and said softly, "Exchange them all."

The sea of ​​energy vanished instantly.

"He..." Zu Xing's consciousness fluctuated violently, but he was unable to form a complete sentence.

.............

Advanced Guide to Safe Houses:

Note: Wang Wei's safe house calculation process is as follows (it is calculated using dynamic programming, proving that the author did not write it randomly; if there is an error, it is due to a mistake in the dynamic programming calculation):

1. Reconfirm the original data

Project Numerical Scientific Counting

Total safe points: 2,756,200 trillion points (2.7562 × 10²⁶ points)

The current single-transaction consumption is 7,337 billion points (7.337 × 10¹¹ points).

Current area: 7,336,719 km² (7.336719 × 10⁶ km²)

II. Calculating the number of promotions n

Arithmetic sequence formula: S = n × [2a₁ + 10(n-1)] / 2

Substituting a₁ = 7.337 × 10¹¹, S = 2.7562 × 10²⁶:

2S = 10n² + (2a₁ - 10)n

5.5124×10²⁶ = 10n² + (1.4674×10¹² - 10)n

Because n is extremely large (estimated to be on the order of 10¹²), the 10n² term is absolutely dominant. Let's estimate:

If n = 2.3 × 10¹², then 10n² = 10 × 5.29 × 10²⁴ = 5.29 × 10²⁵

And (1.4674×10¹²)n ≈ 1.4674×10¹² × 2.3×10¹² = 3.375×10²⁴

Adding the two terms together = 5.29 × 10²⁵ + 3.375 × 10²⁴ = 5.6275 × 10²⁵

However, the target value is 5.5124 × 10²⁶, which is nearly 10 times smaller. Therefore, n should be larger.

Recalculation: If n = 7.3 × 10¹², then 10n² = 10 × 5.329 × 10²⁵ = 5.329 × 10²⁶

The linear term = 1.4674 × 10¹² × 7.3 × 10¹² = 1.071 × 10²⁵

The sum of the two terms = 5.329 × 10²⁶ + 1.071 × 10²⁵ = 5.436 × 10²⁶

The target is 5.5124×10²⁶, which is slightly small, so n needs to be a little larger.

Exact solution:

10n² + 1.4674×10¹²·n - 5.5124×10²⁶ = 0

a = 10, b = 1.4674×10¹², c = -5.5124×10²⁶

The discriminant Δ = b² - 4ac = (1.4674×10¹²)² + 4×10×5.5124×10²⁶

= 2.153×10²⁴ + 2.20496×10²⁷

= 2.207113×10²⁷

√Δ = √(2.207113×10²⁷) = 1.4856 × 10¹³.⁵

10¹³.⁵ = 10¹³ × 10⁰.⁵ = 10¹³ × 3.1623 = 3.1623×10¹³

√Δ = 1.4856 × 3.1623 × 10¹³ = 4.697 × 10¹³

n = (-b + √Δ) / (2×10)

= (-1.4674×10¹² + 4.697×10¹³) / 20

= 4.55026×10¹³ / 20

= 2.27513×10¹² times

Verification: Substitute n back into the original expression to check:

10n² = 10 × (2.27513×10¹²)² = 10 × 5.176×10²⁴ = 5.176×10²⁵

1.4674×10¹²·n = 1.4674×10¹² × 2.27513×10¹² = 3.338×10²⁴

The sum of the two terms = 5.176 × 10²⁵ + 3.338 × 10²⁴ = 5.5098 × 10²⁵

Here's the problem: the sum of the two terms is 5.51 × 10²⁵, but the target value is 5.5124 × 10²⁶, a difference of 10 times.

Root cause of the error: I got the value of c wrong.

III. Identify the errors

The original equation is: 10n² + 1.4674×10¹²·n - 5.5124×10²⁶ = 0

Δ = b² - 4ac = (1.4674×10¹²)² + 4×10×5.5124×10²⁶

= 2.153×10²⁴ + 220.496×10²⁶

= 2.153×10²⁴ + 2.20496×10²⁸

It's not 2.20496×10²⁷, but 2.20496×10²⁸!

Because 4 × 10 × 5.5124 × 10²⁶ = 220.496 × 10²⁶ = 2.20496 × 10²⁸

IV. Recalculation

Δ = 2.153×10²⁴ + 2.20496×10²⁸ ≈ 2.20496×10²⁸ (The second term is much larger than the first term)

√Δ = √(2.20496×10²⁸) = 1.4849 × 10¹⁴

n = (-1.4674×10¹² + 1.4849×10¹⁴) / 20

= 1.470226×10¹⁴ / 20

= 7.35113×10¹² times

Verification: 10n² = 10 × (7.35113 × 10¹²)² = 10 × 5.4039 × 10²⁵ = 5.4039 × 10²⁶

The linear term = 1.4674 × 10¹² × 7.35113 × 10¹² = 1.0787 × 10²⁵

The sum of the two terms = 5.4039 × 10²⁶ + 1.0787 × 10²⁵ = 5.5118 × 10²⁶ ≈ 5.5124 × 10²⁶

V. Corrected Data

Number of promotions: 7,351 billion (7.351 × 10¹²)

New area: 7.351 × 10¹² × 0.0001 = 7.351 × 10⁸ km² = 735,100,000 km²

Final area: 7,336,719 + 735,100,000 = 742,436,719 km²

Last consumption: 7.337×10¹¹ + 10×7.351×10¹² = 7.337×10¹¹ + 7.351×10¹³ = 7.424×10¹³ points = 742,400 billion points

VI. Revised Final Data

Safe House (Growth Type)

Rating: Supreme

Combat Power: +∞

Effect: Activating the innate ability, it can create an absolutely safe zone covering an area of ​​approximately 742,436,719 square kilometers. Within the safe zone, the host is in an absolutely invincible state.

Superpowers: Insight, Reflection, Teleportation, Energy Transfer

Limitations: Safe houses cannot be moved in real time, their lifespan is approximately 129,600 years, and their abilities can only be used every 1 day.

Details: Approximately 742,400 trillion safety points are required to advance (next promotion).

Remaining safe points: Very few (negligible)

VII. Comparison with Earth's Surface Area

Earth's total surface area: 5.1 million km²

742,436,719 km² ≈ 1.46 times the surface area of ​​the Earth

That is, once the safe house is deployed, it is almost half the size of the entire Earth's surface (including oceans and land).