Eight-Year-Old Trash: Heir-Grabbing System, What the Heck?

Transmigrated into the Prince's mansion, living as the heir for eight years. Seemingly a perfect start, but born with crippled meridians unable to cultivate. Qin Feng wanted to stay indoors and survive a few more years, but unexpectedly, the system arrived ten years early. [Detected that you are eighteen and still haven't broken your inner demon. Now immediately step out of the door and pay respects to your parents (Reward: Repair meridians)] The next moment, Qin Feng stepped out of the heir's mansion, mission complete. [New mission: Propose to the Prime Minister's daughter. (Reward: Heaven-grade cultivation technique)] Qin Feng: I'm only eight years old? Miss, want to date?