It is estimated that many people think of 2,000 drops of water, but in fact, electricians have already had more shocking scenes. In the big scene, there are fleets exploding stars, and the small battlefields have carrier-based aircraft dogfights. However, the most shocking thing is that this kind of fierce battle has lasted for 20,000 years, and countless civilizations have been destroyed by this. The following original text is taken from Liu Cixin’s “Rural Teacher”. Although this memory has been inherited for hundreds of generations, it is still so vivid and unforgettable in the minds of trillions of citizens of the Carbon-based Federation. At that moment 20,000 years ago, the silicon-based empire launched a full-scale attack on the carbon-based federation from the periphery of the galaxy. On the 10,000 light-year-long front, more than five million interstellar warships of the Silicon-based Empire started stellar leapfrogging at the same time. Each battleship first uses the energy of a star to open a space-time worm hole, and then jumps from this worm hole to another star, and then uses the energy of this star to open the second worm hole to continue the jump… because opening the worm hole consumes Because of the large amount of energy of the star, the star’s spectrum temporarily shifts to the red end. When the spacecraft completes the transition from this star, its spectrum gradually returns to its original state. When millions of warships perform a stellar leapfrog at the same time, the effect produced is very terrifying: a 10,000 light-year red band of light appears on the edge of the Milky Way, and this band of light moves toward the center of the Milky Way. . This scene is invisible in the light-speed horizon, but it is displayed on a hyperspace monitor. The red belt made up of color-changing stars, like a 10,000-light-year-long wave of blood, surged toward the territory of the carbon-based federation. The first carbon-based federation that came into contact with the silicon-based empire’s attacking forward was Green Ocean Star. This beautiful planet orbits a pair of binary stars, and her surface is completely covered by the ocean. A forest made of soft long vine plants floats in the vigorous ocean. The gentle and beautiful, crystal-clear body of the green ocean star swims among the green forests in the sea, creating the round-like green ocean star Eden. civilization. Suddenly, tens of thousands of targeted beams fell from the sky, and the silicon-based empire fleet began to use lasers to evaporate the ocean of green ocean stars. In a short period of time, the green ocean star became a boiling cauldron. All the creatures on this planet, including the five billion green ocean star people, died in extreme pain in the boiling water. They were made by cooked organic matter. The entire ocean became a green soup. In the end, all the ocean evaporated, and the beautiful green ocean star of the past became a hellish gray planet wrapped in thick steam. This is an interstellar war that almost affects the entire galaxy. It is a fierce competition for survival between carbon-based and silicon-based civilizations in the galaxy, but neither of them expected that the war would last for 20,000 galaxy years! Now, apart from historians, no one can remember how many times there have been battles involving more than one million warships. The largest super battle is the Second Spiral Arm Battle. The battle was conducted in the middle of the second spiral arm of the galaxy. The two sides invested tens of millions of interstellar warships. According to historical records, on the vast battlefield, there were more than two thousand supernovae detonated. Those supernovae were like fireworks in the dark space in the middle of the second spiral arm, turning it into a super-radiating ocean, with only clusters. A ghostly black hole drifts in it. At the end of the battle, the interstellar fleets of both sides almost died together. Fifteen thousand years have passed, and the Second Spiral Arm Battle now sounds like a misty myth in ancient times, only the ancient battlefield that still exists proves that it actually happened. But few spacecraft have actually entered the ancient battlefield, which is the most terrifying area in the galaxy, and this is not just because of radiation and black holes. At that time, in order to carry out tactical maneuvers, the unimaginable battleships of the two sides carried out a large number of ultra-short-range space-time transitions. It is said that some interstellar fighters at that time had an incredibly short space-time transition distance during space combat A few kilometers! In this way, the space-time structure of the ancient battlefield is riddled with holes, like a large piece of cheese with countless long holes drilled by rats. Once the spacecraft strayed into this area, it might be twisted into a slender metal rope by the distorted space in an instant, or pressed into a thin film with an area of hundreds of millions of square kilometers but only a few atoms in thickness, which was immediately torn to pieces by the radiation wind. . But it is more common that the spacecraft becomes a piece of steel plate when they were built, or immediately becomes so old that there is only a dilapidated shell, and everything inside becomes ancient dust; people here may also instantly return to embryonic state or change. A pile of bones… But the final battle is not a myth. It happened a year ago. In the desolate space between the first and second spiral arms of the galaxy, the silicon-based empire assembled the last force. This fleet of 1.5 million interstellar warships built a thousand light-year radius around itself. Antimatter cloud barrier. The first battleship group that the Carbon-based Federation entered into the attack fell into the antimatter cloud as soon as it completed the time-space transition. The anti-matter cloud is very thin, but it is extremely lethal to the warships. The warships of the Carbon-based Federation immediately become fireballs with stabs, but they still rush towards the target. Each warship drags a long tail of fire, leaving a luminous trail behind. This array of more than 300,000 fireballs forms the most spectacular and tragic picture of the carbon-silicon war. In the antimatter cloud, these bolides gradually shrunk, and finally disappeared very close to the silicon-based imperial battleship array, but they used their sacrifices to open a channel in the antimatter cloud for the subsequent attack fleet. In this battle, the last fleet of the Silicon-based Empire was driven to the most desolate area of the galaxy: the top of the first spiral arm. Now, this carbon-based federal fleet will complete the last mission in the carbon-silicon war: they will build a 500-light-year wide isolation zone in the middle of the first spiral arm, and most of the stars in the isolation zone will be destroyed. To stop the stellar leapfrogging of the silicon-based empire. The stellar leapfrog is the only way for large-tonnage warships in the galaxy to conduct long-range and fast attacks, and the maximum distance of a leapfrog is 200 light-years. Once the isolation zone is created, if the heavy warships of the Silicon-based Empire want to enter the central area of the Milky Way, they can only cross the distance of 500 light-years at the speed of sublight. In this way, the Silicon-based Empire is actually imprisoned at the top of the first spiral arm. Nor can it pose any serious threat to the carbon-based civilization in the center of the galaxy.