Back in Ancient Times, I Married My Brother-in-Law to Bring Him Good Fortune

After a midnight session of gaming, an older homebody suddenly died of excitement! When he woke up, he had inexplicably transmigrated through time to ancient times. Looking at the thatched hut with its bare walls, his eldest sister, pale and gaunt, and his sickly-looking mother, he despairingly realized that he hadn't transmigrated in his own body at all. His soul had attached itself to a little kid, making him the youngest child in the family. What a shocking start! The whole family lived in one thatched hut. His grandmother was actually his stepmother, and his uncle's family squeezed and bullied them, wishing they could make them work day and night. His mother was timid and honest, and hadn't enjoyed a single good day since marrying into the family. His eldest sister was even less welcome at home because she was a girl. Could it be that he'd transmigrated just to take part in family intrigue? The old homebody could only weep in despair! Heavens! Earth! Open your eyes! Couldn't you at least have sent me to a male-oriented story? Family intrigue isn't my strong suit! Even if I fought his second uncle's family to the death, how could a six-year-old kid like me win? His grandfather and father had gone off with a caravan to earn a living and still hadn't returned. Without their protection, life would be hard for his mother and the children! Just as his wicked grandmother was about to bully them to death, a wedding sedan arrived outside amid the sound of drums and gongs. It turned out that his eldest sister had been betrothed as a child, and the other family had come to take her home to bring good fortune to their sick son. To save her little brother's life, his eldest sister insisted on taking him with her. And so, Ning Guo'er had no choice but to follow her to the home of his future brother-in-law. Would that sickly brother-in-law's wedding cure him? He really didn't want to get involved in family intrigue!