Born Short-Lived? My Sweet Wife Is an Immortality Elixir!

I, Han Shuo, transmigrated here only to become a sickly man with three months left to live. At the brink of despair, I activated a System, but it turned out to be a life-burning, pay-to-win System! How could a dying man afford to burn through his lifespan? That was until my family arranged a marriage to bring me good fortune, marrying me off to Su Qingning, an orphan who had sold herself to bury her father. On our wedding day, the instant our fingertips touched, an immense vitality surged into my withered body like a mighty river rushing backward! The System's prompts rang out frantically: 【Touched the Phoenix Divine Body. Lifespan reward obtained!】 Only then did I realize that my beautiful, delicate-looking wife, with her pale skin, possessed the makings of an unparalleled Empress! From then on, I burned through my lifespan by day to crush gods and demons, and cozied up to her at night to rack up lifespan. When I stood with my back to all living things, ruled supreme through the ages, and gods and Buddhas knelt before me, I had just one thought: Living off my wife is the best! … I, Su Qingning, am an Empress reborn, born with the Phoenix Divine Body. I sold myself to bury my father and became the good-luck bride of a sickly young master. On our wedding night, when his pale fingers touched me, they strangely grew warm. He looked at me and suddenly said with great solemnity, “My lady, I need you to help me cultivate.” My face flushed red. I thought it was just pillow talk from my ailing husband. But from that night onward, whenever we grew intimate, his complexion visibly improved, and he even began practicing martial arts. The servants in the household all said it was the good fortune brought by our marriage. Though I didn't understand the secret behind it, I happily went along with every one of his cultivation requests, watching him go from the brink of death to shaking the entire universe. The world fears him like a god or demon and praises him as immortal and invincible. Only I know that, at the summit of the heavens, he is still the young man who needs to cuddle up to me to fall asleep. Husband, I paved your path to immortality with my own hands.