The nobles and slave owners in the Continent have been doing that because of a large scale slave rebellion that happened before. Unfortunately, those slaves were suppressed. Ever since the slave rebellion, those nobles found that suppressing the slaves cost too much money, so they looked for alternatives. They discovered that spending just a little bit of money to educate those who grew up as a slave would repress any feeling of rebellion.
Any civilization that had developed for tens of thousands of years would not be simple. There had to be reasons why nobles would rule the Continent for so many years. Naturally, if they didn't develop such means and methods, how could they stay in power for so long.
It was because of these reasons that when Green bought the slaves, their hearts now belonged to the Buda clan.
However, Daisy and Ann grew up differently than the slaves. They were once commoners, and although the living standards of commoners on the Continent weren't that great, it was still better when compared to a slave's. The most notable part was that if you were a slave for life, then your family will be slaves for generations.
Zhao knew this, so every day he would spend some time with the slaves so they would grow more comfortable being around him. He knew that changing the ideas of these slaves won't happen overnight. Teaching the slaves to know how to read will let these slaves know more about the truth.
Zhao didn't think that one day he would change the world. He knows that he's just a regular otaku. After coming here, he could only achieve things because his spatial farm was a cheat. Besides, he had no ambitions to change the world, especially when he knew that this society had been based on slavery for tens of thousands of years.
He just wanted an easy life. But since he still remembered how he lived in his past life, he was not accustomed to ruling over slaves. So he set it up that as long as you work hard, you would gain freedom as a reward.
As for the Black Waste, Zhao knew that it was his own private property only because all of the nobles in the Continent didn't want it. After all, an ordinary stone was just a stone.
But Zhao knew that once he reformed the soil of the Black Waste, an ordinary stone would become a piece of jade. It was like turning a baby into a cute baby that everyone wants to grab.
So if you wanted to protect your baby, you have to have the strength. The strength that he had now wasn't strong enough. But once he opens his pasture, who would dare offend him.