MTL - City Lady-Killer - Chapter 13 Huang Rongrong

In the tenth year after the new era, the world finally came to an end. Zhang Mu truefully waited for his death, but unexpectedly found that he had returned to ten years ago. With his memory about the future, he swore that he would change the calamitous history, saving the earth from being destroyed! Walking dead, zergs, evolvers, and various mutated animals… nothing can stop him! The first step is to retrieve his identity as an era merchant , then find all the treasures he can remember to enhance himself!

- Description from Novelupdates

The strongest Demon Lord dies, and reincarnates as a human. Not only that, he because of various incidents turns into the hero’s best friend.

Follow his journey as he tries to help the hero escape his fate, and on the sideline to conquer the continent while he’s at it.

Murong Jiu, the Ninth Young Miss of the Marquis Mansion, was ugly and talentless, and her fate was to harm her relatives. She was raised in the countryside from a young age. Due to her exceptional medical skills, she was used by the Crown Prince, who drained her of all her value and then threw her into a deep well to drown.Only before her death did she realize she had been switched at birth. Others were rightfully enjoying everything that should have been hers; later, all her family died for her, becoming stepping stones for the Crown Prince!Reincarnated, she returned like a vengeful ghost from hell, making her enemies tremble with fear, ready to seek revenge for each grievance.Unexpectedly, she unintentionally became the darling of her biological family, which made her retract her sharp edges.As the substitute Princess Consort of Prince Ling, she and Prince Ling were a fake couple, intent only on finding the real father of the child in her womb, yet unaware that the man from that night was right in front of her…

Distant green mountains, a remote village, an ordinary boy struggling to survive, whose mundane life transforms into the path of cultivation. Who is real, and who is fake? Who can accompany the bright moon to the end? The world of immortals begins from here.