New tiebao City, on Freedom Square outside the city hall.

    Optimus Prime was waving a heavy sword and fighting with his teacher, the natural enemy.

    "Teacher... I thought I was confused and lying, but you let me down..."

    The natural enemy easily blocked Optimus Prime''s epee with a shield. He felt the power from the shield, and the expression on his face was more gloomy.

    "My student!" he made a sudden effort and lifted Optimus Prime with his shield.

    Then he waved a long knife that looked like a warship''s protective plate and chopped at Optimus Prime. At the same time, he didn''t forget to preach: "you must realize that the Autobots who yearn for the so-called peace are not a group of qualified soldiers. Therefore, we have only one end to failure in the war with the Decepticons. If we want to change this outcome, someone must make sacrifices!"

    "So, you betrayed us, betrayed the Autobots!"

    Optimus Prime narrowly blocked his chop. The powerful power of the natural enemy forced his body to retreat two steps before he stopped.

    The natural enemy raised his knife and chopped at the former students again. At the same time, he shouted angrily: "betrayal? No, I just made a deal with Megatron!"

    With great power, he hacked at his students and resisted the natural enemies with all his strength this time.

    Optimus Prime didn''t notice for a moment. When the heavy sword in his hand collided with his long knife, the great power immediately knocked away the weapon in his hand, and the whole person was lifted up by the great power.

    "My student... As a commander, you are absolutely qualified!"

    The hand holding the long knife closed behind him. With a sneer, the natural enemy took out a long gun from behind and aimed it at Optimus Prime.

    "But as a leader, you are absolutely unqualified!"

    Without hesitation, he pulled the trigger. The special weapon, which looked like a shotgun on earth, sprayed a sandy yellow energy mass at the muzzle and quickly bombarded Optimus Prime.

    "No..."

    The iron sheet fighting not far away saw this scene and immediately wanted to crack his canthus.

    The natural enemy looked at his face without expression. He looked at his former students with an unbelievable face. His heart was not fluctuating.

    "Goodbye, my student!"

    Then he raised his weapon - the cosmic rust gun again. Under the eyes of several Autobots who broke away from their opponents and tried to protect Optimus Prime, the natural enemy pulled the trigger again twice.

    "Bang... Bang..."

    The weapon against natural enemies, the cosmic rust gun, is one of the highest achievements of the Autobots camp in the past.

    When the cosmic rust struck, almost all silicon-based life similar to Cybertron in the Milky way were fatally hit.

    This special disease, which has not been explained clearly by civilization, has amazing corrosivity to all metals.

    Once any metal is infected with this rust, it will rust rapidly and soon become a pile of rusty soil that will break up like dust.

    The history of CyberTAN civilization has also encountered two cosmic rust, the first recorded occurred during the colonization of CyberTAN by kuntasha civilization.

    Because of the attack of cosmic rust, the kuntasha civilization, which was so powerful that it fought at the same time with dozens of powerful civilizations in the galaxy, had to accept a rout that was almost destroyed.

    Thanks to that cosmic rust, the cybertans not only successfully defeated the kuntafloxacin colonists and recaptured their home planet.

    They also took advantage of the great retreat of kuntasha civilization to obtain a large number of kuntasha technologies and alien colonies of the former kuntasha people.

    Cybertron civilization, from a colony of human beings and fish, has become a powerful cosmic civilization.

    When the cosmic rust struck that time, the Cybertron civilization was not seriously hit.

    However, the second cosmic rust almost destroyed the Cybertron civilization.

    At that time, at the end of the first civil war in Cybertron, Decepticons and Autobots were still fighting for control of Cybertron because of their different ideas.

    The cosmic rust came at this time. It was as strange and arrogant as the first attack.

    The first one infected was a wounded soldier from the Autobot camp. When receiving treatment in the rear, the body that was about to recover suddenly deteriorated and completely rusted in a short time, turning into a pile of rusty soil.

    Then, the cosmic rust broke out one after another in the two camps of Autobots and Decepticons.

    In a very short time, more than 30% of Decepticons and Autobots died quickly because of cosmic rust.

    In order not to be completely genocidal, the Decepticons and the Autobots finally signed a hasty truce, ending the first Cybertron civil war.

    After that, the two camps all invested massive manpower and resources to study the methods to prevent and completely eradicate cosmic rust.

    The result was no success. In the end, both Decepticons and Autobots had to sleep in order to fight against cosmic rust with closure and time.

    Of course, that''s just a plain statement.

    At least a few senior executives of Autobots know. In the continuous treatment of patients with cosmic rust, several of their scientists finally analyzed a small number of molecular structures of cosmic rust and created a special induced energy to simulate cosmic rust.

    The weapon against natural enemies, the cosmic rust gun, is a dangerous killer designed with special induced energy.

    With one shot, even an elite soldier will be seriously injured immediately. At the same time, the wound begins to rust rapidly and will soon die.

    Because it was too vicious, the Autobots in the past only made one of these weapons and handed them over to their natural enemies.

    Seeing that the body began to rust, Optimus Prime, who was about to lose his life, was calm on his face.

    "It''s ironic that you, my student, were responsible for supervising the manufacture of this weapon... But now you die in its hands..."

    He raised his shield to block the gun grenades from the iron sheet.

    The natural enemy looked at him and didn''t kill the iron sheet.

    "Autobot, prepare to attack with me!"

    After calmly giving orders in the channel, the natural enemy turned and walked towards the machete.

    Around him, Autobots loyal to him are quickly closing in on the natural enemies.

    Most of them, in fact, do not want to be enemies with Optimus Prime and iron sheet, so they mostly put water in the battle just now.

    At this time, looking at the former leader Optimus Prime, lying not far away, his body rusted rapidly, and he was about to die.

    Some Autobots could not help but show their expressions of intolerance, guilt and sadness. With this complex mood, they quickly followed the natural enemies to evacuate, and soon left xintiebao city and rushed to North Africa.

    Their destination is Cairo, the capital of that ancient civilization with a long history, on the Bank of the Nile!