I Have a Fairy's Protection

Blurb One: When Su Yuan Ning was seven, her grandfather sent her away from Liangjing to live with a farming family, because a fortune-teller had predicted that she would bring misfortune to her closest relatives. She was a little slow-witted and not quick to react, so people were always bullying her. Several times, she nearly lost her life. Fortunately, an unknown fairy elder sister helped and secretly protected her all the way. Su Yuan Ning survived one crisis after another and managed to grow up against all odds. When Pei Xing Yu was twelve, he came across a strange mirror while traveling with the army. It invited him to play a little game about raising a child. There was a little girl in the mirror. She had no food or drink, was rather dim-witted, and was bullied every day. Pei Xing Yu sent her clothes and bought her food, stood guard for her at night, and chased off dogs for her by day. He kept it up for eleven years. Later, the little girl grew up and was taken back to a grand estate. By imperial decree, she was forced to marry a man who was on the verge of death. The little cabbage he had raised was about to be trampled by a pig. He couldn't keep playing the game. Pei Xing Yu felt a thousand conflicting emotions, quit the game, and used the mirror to prop up a table. Then one day, when his poison flared and he was coughing up blood, barely clinging to life, he saw the new wife the emperor had decreed for him, with ill intentions. Only then did he realize in shock that the mirror game had been real, and that the wretched man was none other than himself. Pei Xing Yu sat bolt upright on his deathbed and gritted his teeth, stubbornly holding on to life. Everyone: How is that wretch Pei Xing Yu still not dead?! Pei Xing Yu: I've been raising her for over a decade. I can keep at it for another lifetime. Blurb Two: Su Yuan Ning of the Minister of Revenue's residence had a snowy, luminous face and beauty like a flower. But she had been unlucky since childhood, and her marriage prospects took one twist after another after she returned to the capital. Her two betrothed men were both a disaster. One was blind, but broke off the engagement halfway through for the sake of his unattainable true love. The other was sickly, yet was caught in bed with her reborn cousin. Su Yuan Ning was forced to switch betrothed men with her cousin and marry Pei Xing Yu of the Duke of Duan's residence. Pei Xing Yu was a handsome man, radiant as he walked through the world, like a gleam of light. Unfortunately, he was a ruthless minister who killed without batting an eye. The poison had entered Pei Xing Yu's lungs, and Empress Dowager Pei's downfall was imminent. The aunt and nephew who had conspired together would soon meet their end. Everyone knew Su Yuan Ning would surely die after marrying into that household. Yet, against all expectations, Pei Xing Yu did not die, Su Yuan Ning did not die, and the two of them went on to live happily together. Everyone: "...Why?" Su Yuan Ning: "To tell you the truth, I've been protected by a fairy since I was little. Really." The original title was After Switching Betrothed Men with My Reborn Cousin. I changed the title and added another blurb. Note: The male and female leads are natives of this world. Some supporting characters transmigrate or are reborn. Theme: Keep working hard at life, and unexpected surprises will come.