Starting from the Age of Eighty-Six, He Rebelled Against the Genius

Thank you for the invitation. I am in another world and will soon be buried. My name is Jiang Xun. I was just reminiscing about my youth in the yard when a system suddenly popped up. It was called [Genius Boy System]. Please, Brother System, am I still a teenager at eighty-six? [Novice mission: Your contemporaneous partner Li Qinglian possesses a unique sword spirit root in the world, but because of the "hidden weapon" characteristic of the sword spirit root, no one knows about it yet. Please ask the host to get close to her and establish a friendship. Reward: Sword Spirit Root] Sure enough, System B arrived late. It was seventy years ago. Li Qinglian is my ex-girlfriend who we broke up with fifty-five years ago. Go find her now? I couldn't help but touch my old bones. It's a pity that I couldn't resist the temptation of system rewards and fell into its trap. Since then, the system that was implemented seventy years later has turned my life upside down. It was only from that year that I realized what true cultivation of immortality is like!