Rebirth in Journey to the West: Sun Wukong - Chapter 247 - Donghua Emperors Reminder (2 more updates, the remaining 2 updates together in the evening)

After waking up in the body of the Young Master of the Luo family, he finds he has the knowledge of hundreds of games and Light Novels. However, he finds his Dantian is crippled, so he can’t practice cultivation! Luckily, he has the Upgrade system.

The mortal body, metamorphosis, longevity, immortality, and eternal life. These five realms, step by step, reveal themselves in front of you. As a normal person, how can one try step by step to reach and open the door to eternal life?

Between the heaven and the earth lies the mortal body, the mysteries of metamorphosis, freedom of longevity, the power of immortality, and the hope of eternal life. A story filled with endless new magic, a new world of immortal styles, people, demons, gods, fairies, magic, kings and emperors. A world of love and hatred, revenge, and mystical battle, all in “Eternal Life.”

- Description from Novelupdates

Our protagonist Caam is a man from Earth that was reincarnated into this world as a demon. In order to survive, he spared no effort in avoiding the sparks of battle and without noticing it, he became strong himself.

The empire encompassed endless twinkling stars, but in this dark and terrifying distant future, there were only endless wars.......Gu Hang became the governor of a wasteland planet, where previous governors had all been executed for failing to deliver the tithe on time.Monsters and Low Energy Storms rampaged, survivor factions schemed against each other, technological regression, low productivity, the resurgence of Evil Gods, Green Skin Orcs taking root and sprouting...“Don't panic just yet, let me check the panel below.”[Military Tokens], [Heroes], [Technology], [Events]...Starting as the planetary governor, he would build fleets that traversed the Star Sea, suppressing all alien forms, heretics, traitors, and demons of chaos!Although I formed battle groups on my own, funded Battle Nuns, diverted the imperial tax, and disregarded deployment orders... I knew I was fiercely loyal!Traitors? This is clearly the Third Empire!