What Should a Sickly Beauty Do After Dying and Gaining Five Husbands?

Xia Chi had been frail and sickly since childhood. After solving a major engineering challenge, he died from a severe illness at just 25 years old. When he woke up again, he had become a useless mecha engineer and gained five handsome husbands, each with a distinct personality. But of the five husbands, one was crippled, one was disabled, one was malnourished and had reverted to his original form, one was gravely ill and about to die, and the last one was missing after his mecha was destroyed. Xia Chi, who had been single for 25 years: "..." Is this normal? As his thoughts spiraled into chaos, a flood of memories welled up in his mind. The original Xia Chi had only C-class mental strength, making him the lowest grade of pureblood. Yet all his matched spouses were SSS-class mental strength users. Before marrying him, they had all been exceptionally gifted geniuses. Xia Chi was a petty, stupid man. Jealous of their talents, he bullied and abused them at every turn. He not only allowed them to use only C-class mechas, but also forced them to enter contamination zones to find energy cores for him. In his memories, Xia Chi had made one mess after another. In the end, his five husbands hacked him to pieces, then hung his head on the wall of the safe zone for seven days and seven nights. After taking in the memories, Xia Chi's legs went weak. In his previous life, he had devoted himself to solving major engineering challenges and knew nothing about romance. He never expected to die of a serious illness, get a second chance at life, and find himself in the worst possible situation from the start. Xia Chi took a deep breath and looked at the people in the room. "Husbands, a harmonious home brings prosperity." Please read these content notes! 1. Bottom-focused, one-to-many romance. Frail beauty but genius mechanic x his five husbands 2. Half plot, half romance 3. Academy life and mecha competitions 4. Mountains of original worldbuilding. Specific details will be explained in the story! Theme: A harmonious home brings prosperity