"Calculate the gravitational curve of the broken earth and go to Tsingyi Island." Wu Chen ordered.

"As for orders, my lord." Valkyrie "Valkyrie" Megan Gael acted immediately. Although the two alien digit queens have taken over the "super brain zone chain", the fortress giant-279, which Valkyrie "Valkyrie" Megan Gael, is still the command center of the entire Oasis Sky Island.

"Dust, be careful. Although the earth's crust is broken, following the shell theorem, in addition to being jointly affected by gravity, there are still plate movements between the debris and fragments." The castle queen "Raging Girl" Ferosa reminded at the right time.

Shell Theorem is a classical gravity theory, which can simplify the contribution of gravity to the inside and outside of a symmetrical sphere. Because it was discovered by Prime Minister Newton, it is also called the "Newton's Shell Theorem". The results of the shell theorem show that in a sphere with uniform mass distribution, gravity decreases linearly from the surface to the center to zero: the contribution of a sphere symmetrical object to the gravity outside the sphere is like concentrating the mass of the sphere at the center, and the object inside the symmetrical sphere is not affected by the gravity of its outer sphere shell. From this, it can be seen that for a spherical object, if its internal cavity is uniformly distributed, its mass, moment of inertia and center of gravity are only related to the shape and size of the shell, but not to the shape and size of the inner cavity.

Plate motion refers to the relative movement of one plate on the earth's surface to another plate. The main reasons include the combined effect of mantle convection, rotational centrifugal force, Coriolis force, and the gravity of the sun and the moon.

"So some important planetary (earth) rules are still in operation." Wu Chen nodded slightly.

As Oasis Sky Island passes through thick smoke and embers gushing from cracks in the crust, the Hong Kong Mecha Hunter Broken Dome Base near Tsing Yi Island.

Many details began to appear before everyone.

All six mecha warehouses were damaged, and the annexes also suffered damage to varying degrees. The mecha transportation platform full of craters was vaguely visible on the mecha transportation platform where huge pieces of reinforced concrete were buried.

The Pan Pacific Defense Corps (Pan Pacific Defense Corps), abbreviated as "PPDC", is composed of 21 countries including the United States, China, Japan, Russia, Chile, Canada, Australia, South Korea and other 21 countries. The purpose is to jointly attack the army of Kaiju, a alien invader who emerged from the wormhole deep in the central part of the Pacific.

On August 11, 2013, the wormhole was in the plot of "Pacific Rim". The Challenger Abyss, about 11,000 meters deep in the Mariana Trench in the Pacific Ocean, opened, followed by a magnitude 7.1 earthquake in Richmond. The colonist "Precursors" of the distant galaxy "Anteverse" planet once again invaded the earth. A monster named "Trespasser" was in San Francisco.

Login, when conventional weapons attacks were ineffective, the military used 3 nuclear bombs, one of which hit and destroyed the monster, but its toxic blood evaporated in the air. The sixth largest metropolitan area in the United States: San Francisco-Oakland Bay, a radius of hundreds of miles became a barren land. Countless people died, and the three cities of San Francisco, Sacramento and Oakland were destroyed. This disaster was known in history as the "San Francisco Incident". The monster landed on the day it was called "K-DAY".

People thought it was just an accidental event of species mutation, but just six months later, the second chrysanthemum "Chaos" landed in Manila, the capital of the Philippines. People realized that a joint organization needed to face the crisis, so the "Pacific Rim Joint Military Defense Force" came into being. While establishing shelters, PPDC established bases for manufacturing mechas in eight places including Hong Kong, Tokyo, Sydney, Vladivostok, and Alaska, and implemented the "(Mecha) Hunter Plan".

The core technology of the giant mecha is called "Floating Source Nerve Connection (Drift). New technology developed based on the common sense (similarity) system of American fighter jets allows two pilots (Pilot) to operate a mecha, so that the actions and commands can be completed simultaneously. The stronger the common sense, the more stable the combat power is, the stronger the combat power. At first, because the mecha's neuron load was too large, the first driver died heroically, and the dual driver system was introduced, one controlled the left hemisphere (co-pilot) and the other controlled the right hemisphere (main driver).

At the same time, the pioneer also continuously updated the biological characteristics of the Kaiju beast through the data returned by the first wave of attacks, making them more adaptable to the current earth environment. With the second wave of giant beasts invasion, humans entered the era of mechas and giant beasts PK. However, more and more monsters poured into the earth from wormholes, and attacked more and more frequently. According to records, by the end of 2024, there were 46 monster attacks, and 14 were in 2024 alone, causing huge harm, and also brought irreparable funding loopholes to the hunter plan. The cost of mecha hunters is too high. Take Horizon Warriors for example. This is a mass-produced mecha, with a total of 4 units produced. The production cost is already very low, but it still costs 30 billion US dollars. The cost of customized version of mechas is higher, even twice that of Horizon Warriors.

Humans were forced to close all mecha bases except Hong Kong and began to build a solid "anti-monster wall" to guard against it. In the years of building the anti-monster wall, few monsters invaded, which led to leaders of various countries that believed that the anti-monster wall was of great effect and monsters dared not invade again. In addition, there were too many scrapped mechas, and many mechas were destroyed in the process of fighting monsters. Those that could not be repaired were directly piled up in the Forgotten Graveyard and the Mecha waste base. However, many mecha enthusiasts would steal some parts of mechas to assemble them into new mechas. Once the assembled new mechas were obtained by the bad guys, the consequences were also serious. Therefore, the plan to produce mechas was completely stopped. The existing mechas were gradually retired and the mecha hunter plan was terminated.

However, with the fourth-level Mutavore landing in Sydney Bay on January 2, 2025, it took less than an hour to break through the "Anti-monster Wall". Although it was eventually killed by the fifth-generation Australian mecha "Striker Eureka", it has caused people to question the reliability of the "Anti-monster Wall". The Mecha Hunter Plan will be restarted immediately.

In 2025, the Hong Kong base is the only remaining mecha base. In order to deal with the new round of giant beast attacks, humans gathered all four mechas in service to defend Hong Kong and fought to the death with the giant beasts. It is known in history as the "Hong Kong Battle" and also known as the "Hong Kong Defense Battle".

The plot point where Wu Chen arrived seemed to be after the end of the "Hong Kong Defense War".

However, as more and more plot elements were identified by the Super Brain of the Star, Wu Chen's expression became more and more serious. Until some small aircraft that were shot down and dead alien pilots were identified, Wu Chen finally confirmed that this was definitely not a mecha battle.

"What did you find, Dust?" The castle queen "Raging Girl" Ferosa also felt that the atmosphere was wrong.

"Look." Wu Chen enlarged the picture of the shot downed small aircraft and the dead alien pilot.

"It's... the alien fighter plane in "Independence Day." The castle queen "Raging Girl" Ferosa suddenly realized: "Is it a plot invasion?!"

"No." Wu Chen corrected softly: "To be precise, "Doom Arena" which (players) specializes in mecha chaos."
Chapter completed!