Am I Proud That I Inherited a Title at the Age of 16?

I was transported to a world called Tianlan. This world is a bit strange. Dwarves are dwarves, elves are elves, and there is no magic! Unreliable parents who only want to get rid of the title (emphasis added); General Meng's brother refused to inherit the title when he was 8 years old; The most embarrassing protagonist inherited the title at the age of 16. Fortunately, when the protagonist was eight years old, he had a dialog box in his mind that allowed him to copy various information and drawings from his previous life. Fortunately, the protagonist's parents are very liberal (emphasis added). Unfortunately, the viscounty to be inherited was very poor; Let's see how the protagonist realizes the construction of the territory, and step by step transforms the world that was originally "failed to create" into the real world. PS: The background is not medieval Europe, not medieval Europe, not medieval Europe!