I Just Started Kindergarten, and the Partner System Arrived??

I Just Started Kindergarten, and Now I Have a Partner System?? Lin Ze is a transmigrator who has just started kindergarten when he suddenly gets a Partner System. Huh?? Wait, I’m only four! Isn’t this system a little early?? System: [At four, Lin Ze displayed astonishing talent and was hailed as a prodigy. At sixteen, he fell from grace as a once-promising genius, and his friends gradually drifted away. He got into an ordinary university and became a couple with his childhood friend, Qin Keke. At twenty-eight, he was stabbed by his ex-girlfriend in revenge and became a vegetable, with less than a month to live. His wife, Qin Keke, suffered a heart attack and, unable to bear the loss, died by suicide.] Reading this, Lin Ze was dumbfounded. He was going to die at just twenty-eight?! And his ex-girlfriend was the one who stabbed him?? Was she a yandere? Who stabs someone like that! The saddest part was that his childhood friend, whom he hadn’t even met yet, would die for him. What a shame. [Ding~ To help you find a healthy, perfect partner, time has now been turned back four years. Mission: Take Qin Keke to the hospital for a checkup. Reward: heaven-defying comprehension (you can learn any skill in a short time and master it).] That’s great! But who’s Qin Keke?? Lin Ze looked at the kindergarten entrance in front of him. Could he meet her inside? Suddenly, the System chimed again. [Ding~] [Mission: Punish your ex-girlfriend, Bai Xixi. Reward: Superhuman fitness, with your stamina limit multiplied tenfold.] Punish her... Lin Ze fell into thought. She... might not even have been born yet. How was he supposed to punish her?