Escape and Farm: I Have a System and Am Invincible!

Feng Xi was thrown into the ancient world and started to escape. Then he was bound to the system and was required to earn enough merit before he could go home. As a result, he earned enough merit not long after. He was just about to go home and file a lawsuit, but he was thrown into another world to escape by his biological father... The heroine is single from birth, no cp, no emotional line