In ancient times, South America lacked shallow metal mines, and the open-pit copper mines that the tribes of the Great River Civilization could pick up on the ground could find, and the South Americans needed to dig tens of thousands of meters to find them, and obviously, they could not dig tens of thousands of meters to find metals without metal, which led them to go in different directions in terms of warfare, whether it was the Mayans or the Aztecs, they were good at using obsidian weapons, they embedded sharpened obsidian into the wood, and made obsidian swords like saws, By replacing bronze and iron in turn, they took the grinding stone process to the extreme, even grinding the stone into extremely precise parts that could be used to assemble star models thousands of years later.

The nomads of the Mongolian steppes had the most elite cavalry in the world at that time, but the best cavalry did not have the best horses, the Mongolian horses were short in stature, poor endurance, lack of explosiveness, and were completely no match for the fierce and fierce Arabian horses, but the Mongols made changes to their strengths and weaknesses, they abandoned all the cumbersome armor and armor, went into battle lightly, and devoted all their energy to archery and riding. Mongolian horses have many defects, but there are two advantages far beyond other horse breeds, that is, stability and cold resistance, and Mongolian nomads have taken these two advantages to the extreme, stability means that they can carry out mounted archery efficiently, they put hunting skills into war, and use thousands of years of experience in fighting wolves to deal with the enemy, excellent cavalry attack tactics made the Mongolian iron cavalry once invincible, and the horse's hooves stretched from the west coast of the Pacific Ocean all the way to the Danube, establishing the second largest super empire in human history, It was not until modern times that the maritime peoples of northwestern Europe broke the Mongol record with the help of strong ships and cannons.

War can be said to be the most direct and effective way to understand a civilization, the most fundamental spirit and the most advanced technology of a civilization will be reflected through war, the fundamental purpose of war is to defend the right to exist, they will spare no effort to express everything, the larger the scale of the war, the more obvious, let alone the war at the cosmic level, once the war between different civilizations fails, what they lose is everything, and they must do their best to survive.

In war, you will constantly understand your opponent, and your opponent will know you better, this trend is inevitable, the essence of war is the exchange of information, the more information is lacking, the more disadvantaged the side.

Human beings have long ago divided contact with foreign civilizations into five categories, zero contact is distant witnessing, the first type of contact is close witnessing, the second type of contact is a certain part of the human body touching an object of foreign civilization, or witnessing the traces left by the impact, the third type of contact or careful observation of foreign civilization humanoid advanced life, the fourth type of contact is direct contact with foreign civilization for a long time, and the fifth type of contact is that human beings directly use information to reach communication with foreign civilizations.

"So war...... Is it a Type 6 contact? When both sides tear off their pretenses and sacrifice their lives to fight each other is the time when they can see each other most clearly. Ma Yan sighed, and the attacking warhead was completely disintegrated in front of her eyes.

Her previous excessive caution now seems to be correct, that warhead was actually quickly transformed into countless split warheads after being cut and shattered, if it wasn't for the large number of point defense fighters she had arranged in advance, I am afraid that this round of split crystals would cause serious damage to the fleet.

At the end of the first round of fighting, the crystals were almost not damaged, but the human fleet lost one frigate, and the soldiers on board died heroically, and no one survived, in addition to five frigates with varying degrees of damage, but it did not affect the battle.

"How's the patrol going? Haven't found each other yet? Ma Yan asked.

"Not yet, but expanding the search."

"Quickly restore the formation, that thing can attack again at any time, and you can't let your guard down."

"Yes."

The heavy particle cannon on the strategic ship that has just destroyed the crystal is an upgraded version of the earlier particle spear, which is more powerful and more accurate in strike, but the flaw is that it is too bulky and consumes a lot of energy, so it can only be installed on a large strategic ship.

"Ma Yan, is there a problem with you over there?" Asker's voice rang out from the communication channel.

The old man still had beads of sweat on his forehead, and he looked a little tired, and he was honestly flustered when he was attacked, but fortunately, Ma Yan's handling ability was strong enough, and there was no omission in this battle, which minimized the loss of the fleet.

"Report to the sir, there is no problem, I am now searching for the location of the crystal with all my might, and once I find the other party, I will immediately launch a siege network."

"I'm not talking about this, I'm saying you're okay, right?"

"I'm fine, don't worry." Ma Yan's voice was very neutral.

"You've been connected to the bridge system since you entered the stargate, and I wanted to let you disconnect the system and rest after you got there, but I didn't expect to be attacked so soon......"

"I'm fine, you forgot that I connected it for half a month to fight a protracted war, to be honest, I still miss it, it's like an extension of my body, sometimes I connect to the system to feel that I am whole, I have tens of thousands of eyes and ears, and I can reach out and touch the planet in the distance." Ma Yan seemed to be intoxicated by this feeling.

"Come on, you and I both know how energy-consuming this thing is, there was a big battle just now, you estimate that it is almost to the limit, I'll leave the reconnaissance to Ye Zi and them, you disconnect the system first to recover your energy."

"No, I can still bear it, if I disconnect the system, the mobility of the entire fleet will decrease, and it will be troublesome if it is attacked again at this time." Ma Yan shook her head, she had a little trouble trying to talk to Asker, as if she had picked out a vision from a hundred eyes and stared at it.

"Alas...... You do what you can, you're also in your seventies, take it easy. Asker sighed.

"Is what he said true?" Mark asked after Ma Yan disconnected the communication with Asker.

"It may be so for a recruit, but it doesn't matter to me anymore, I'm used to it for a long time, don't worry." Ma Yan smiled flatly, and then sank back into the control system.

"But ......"

"I have a secret to tell you, the comrades-in-arms who once fought side by side with me, after their deaths, part of their consciousness entered the 'bridge' system, and one day, this will also be my home."