MTL - Twenty Seven Years - ~ safe and sound

Bai Aoxue, the best mercenary in the 21st century, is accidentally sent back to the Chengxi Dynasty in Great Continent due to an explosion in her mission, and trapped in the first daughter of Prime Minister. After her rebirth, she is set up by her father to marry the 5th prince Jun Yeyan who wears a mask all day long.
In the face of bloodthirsty enemies, discord between brothers, collusion among courtiers and invasion of enemy state, can Bai and Jun resolve the crises? What will happen to their political marriage? How will the fierce battle for the throne end?
With many twists and turns, the book brings you to experience palace revolution, love and hatred thousands of years ago.

- Description from Novelupdates

After dying from exhaustion in his dreary corporate job, Riku Sakamoto awakens to find himself reborn in the world of his favorite game — EverRealm Online. But he’s not just any adventurer — he’s The Grand Maximus, a max-level legend with every class unlocked and stats that break the system.Yet instead of battles or kingdoms to conquer, he’s greeted by something far more unexpected: the Peaceful Life System — a mysterious power that rewards him with modern comforts for every act of kindness he performs.Help a farmer? Get a fan. Heal a wild animal? Receive electricity. Solve a village crisis? Unlock hot baths, fridges, and fresh-brewed matcha.Armed with nothing but infinite power and zero ambition, Riku settles in a sleepy starter village to live the slow life he always dreamed of. But as he helps the villagers, befriends forest creatures, and lazily reshapes the world around him, his actions begin to ripple far beyond the village borders…After all, who needs war when you’ve got peace, pancakes, and a weatherproof roof?

What is my 1000-year-old monster self to do when I’ve failed my immortal ascension? Time travel — accidentally — and wind up back in my 9-year-old body, needing to re-cultivate, of course. But after that? Get REVENGE! Muahahahaha! But the idiot who killed me — also accidentally — was the main character of the dumb harem Xianxia I transmigrated into. But wait. Wasn’t he only 7 or 8 at this point in time? Well, since I can’t harm a child or the main character without suffering in some way, then I’ll just have to raise him better, faster, stronger, and loyal! Muahahahaha!

In the Kunlun Snow Palace, a sage once said, those who pass away wander, while the living cannot let go.Once the soul departs, it will wither like the autumn grass.Those who are reborn from the dead, existing apart from the mortal realm, shall be shunned by all celestial sects and smitten as undead demons.On this day, a youth awakens from within a coffin, his blood dry and his bones chilled, to find himself a century old upon opening his eyes.A single tear from a sage awaited, a constant companion, may unravel the dreams of the past.Seeking not immortality but a mundane death, not to lament with the ages over lost love and resentment, but only wishing to grow old with tenderness in this lifetime, beneath the white clouds that hold no envy for the heavenly realms.