Rebirth: 100 Days Before Doomsday - Chapter 17: The Power Shift

Master martial artists were beings that no one can obstruct. A martial arts expert has been reborn into the body of a genius whose cultivation has been abolished and has been abandoned by a woman. Therefore, he starts cultivating the art of Xing Yi Quan, producing a solar system within his dantian. His innate talent tramples over all the geniuses, and even the geniuses among geniuses.

His powerful spirit and ruthless and ambitious nature, no matter who he is reborn into, will never change! Slaughter is instinctive, being cold-blooded is his personality, exterminating an entire family is only a means towards a goal, cruelty means infamy, and chasing after women… is just an interest.

- Description from Novelupdates

In order to protect her, the foster brother went to the countryside to become an educated youth and ended up dying at the farm. She could have worked at the factory as a worker, but because she coveted the affection of her biological parents, she replaced her biological brother as an educated youth and stayed at the farm for a lifetime, truly becoming the rural woman that her real sister looked down upon.Although later she became a village doctor through her own efforts, she still worked to exhaustion and eventually died on this land.Now Jiang Xiaoxiao has been reborn and returned with a space...This time, how will she live an exciting life..........This story is set in a fictional world, research enthusiasts please refrain from entering.

Ajax used to coast through life before his parents died, after that he focused hard to try get his life back on track but that wasn't really happening and it all ended the day he got mugged. Given a second chance at life he now looks to become someone who matters and is willing to work hard from the beginning to make that happen.