Past the ruins on one side, an electronic staircase stretched downwards seemingly without end. Feng Yi's footsteps echoed in the hollow corridor. The air circulation here wasn't great, and blurred footprints of the Blade Warriors and weathered debris could faintly be seen on the ground.

At the other end stood a heavy electronic door, displaying a trace of vandalism possibly the masterpiece of the Blade Warriors. Feng Yi mustered up strength to crack the door open just enough for his body to pass through. The sight that met his eyes left him slightly astonished...

It was three dusty mobile warriors, seemingly not belonging to any known model of the present age. Behind the Mechas was a central computer, atop which lay an aged, battered notebook. Feng Yi noticed that in a liquid container at the very back was a Mecha that he had almost overlooked due to the lighting.

Brushing the dust off the notebook, Feng Yi noticed a name renowned in history, Grey Carol. His vibrant gaze fell into brief contemplation...

Being a biologist, Grey Carol from Sena was also a great man. His genetic engineering transformed humans by providing them with powerful genetic shells, his "Brain Domain Gradual Awakening" theory helped humanity take a big step forward, and he developed biological wave conversion fields, creating countless mental ability users.

How could such a great man's notebook appear in the ruins? This puzzled Feng Yi. With this doubt, he started to slowly read the rather unclear writing...

"August 10, 2445. Weather, light rain - Tonight is destined to be a sleepless night. The aging cell brake project has finally made progress. Perhaps it can prolong the average human lifespan by more than 20 years! My god, this is the first time I'm writing down notes. Even in my old age, I still hope to permanently preserve this memorable day."

"February 2, 2447. Weather, sunny - Success! The brake project has finally succeeded!"

A smile crept onto Feng Yi's face, "Thank you for your remarkable contributions to humanity." Striving tirelessly for one's ideals, bravely marching forward in the pursuit of dreams, these were spirits worthy of emulation. Despite the century that had passed, he could sense the elderly man's excitement.

"September 20, 2447. Weather, sunny - Anna is a poor little girl who lost her parents when she was young. She has a congenital disability but is optimistic and cheerful. With my insignificant help, she finally got into primary school, which was her dream. However, she died on the third day due to sudden war. Child, grandpa misses you. I hope there are no worries in heaven."

"October 20, 2452 - A seed of ambition is blooming wildly in Sha Meng. The Atlan Federation began the War of Defense, and Sena got involved. Who can understand the pain of losing loved ones? After careful consideration, I realized that I must do something within my power for my beloved country. But what can a biologist do? Develop biochemical weapons like a butcher? No, that's not the result I want. I just hope the war will end soon, and if death comes, so be it. I'm not afraid of death, but I'm not in a hurry to die either."

"January 2453 - YV4202 Pachi has also become a target of Sha Meng's. On the third day of the nuclear explosion, all research team members who could leave had left, and the citizens began to evacuate. Pachi now has a new ironic nickname: Death Planet."

Because of the damnable war, countless peace-loving people were displaced. How heart-wrenching must their pain be? Now, the atmosphere of this beautiful planet is undergoing tremendous and irreversible changes. Perhaps after 50 years, it will no longer be able to retain heat or resist ultraviolet rays, and to reverse the current environment will take 800 years of atmospheric improvement.

Although everyone has left, I tried all means to stay. I want to be buried with my deceased loved ones. Dying in the land I love is my final destination. In the end, I've come to realize that a nation's rise and fall often depends on itself, and that it has to protect itself with an unstoppable sharpness. While it's unlikely, I still harbor a faint hope of creating a biological Mecha to awaken future generations, serving as a reminder of the tragedy of war and a memorial to my craving for peace.

Luckily, this underground base can effectively block radiation, and the internal basic living necessities can last for a lifetime. I painfully and introspectively decided to use the existing resources to create a biological Mecha, but mechanical engineering was too difficult for me. According to the central computer display, I've spent 17 years already, exhausting all resources collected from this abandoned planet, and ultimately only half-completed it.

Regrettably, my time is running out. This biological Mecha lacks a weapons system and a power system.

If you're reading this, I believe we must have a lot in common. I, as an old man, request you, if you come across this note, to remember the sorrow of history. If you're a pilot, who despises war, and has someone precious to protect, you can choose to travel with it, carrying along my lifelong longing."

- Grey Carol.

Feng Yi stood still for a very long time, unable to snap out of the historic tranquility lost in thought... How stoically must Mr. Carol have endured the solitude and loneliness, all for the sake of the flicker of hope in his heart, in order to honour his roots, his dreams...

Looking back on history, a century passed in the blink of an eye. Looking towards the future, warfare rages on without end. Rulers rise and fall, only leaving a mark on the river of time, perfectly reflecting the seven deadly sins. These moments flashed before Feng Yi's eyes one by one, as though he were looking at a fleeting landscape. He could feel what Grey Carol must have felt then - despair and hope, longing and anticipation...

His gaze gradually turned towards the computer. Through the central database, the parameters of the Mecha project were fully revealed...

Attack system, XV super-control system, Operable auxiliary equipment, Main gun duplex, Sub-gun duplex, SE duplex, On-board missile launcher duplex.

Protection system, Biological response device.

Defence system, Compound biological armour: Anti-penetration mixed outer layer, Bionic nano pigment crystal outer layer, Black hole constant temperature buffer cotton inner layer, Super metal inner layer, Insulation layer, Biological hibernation layer, Anti-radiation, strong. Anti-impact, strong. Anti-strike, strong. Anti-electromagnetic, weak.

Intelligent brain device C, none.

Power system, Unadded, Torque limit, Biological cold circulation system.

Suitable environment, Omnipotent.

It's clear that this is an extreme Mecha model. The torque limit and duplex weapon system highlight its mobility and output. However, the model is too old, lacks basic hardware such as an engine, and doesn't even carry any weapons. Perhaps its most pronounced feature is its bionic structure. Its weakness against electromagnetism is always difficult to improve. Under the ravages of time, the original system could hardly compete with modern equipment, perhaps its creator was aware of this, hence didn't install any equipment from that era on the Mecha.

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