They not only abused David in every way, but also tortured David's mother to death.
After David's mother died, his stepfather forced him to work as a child laborer. During this period, David escaped by luck and went to his kind aunt, who sent him to a good school and received a good education. David experienced hardships in the process of growing up, but his kind, honest and helpful nature has never changed.
He made progress under difficult circumstances and worked hard. In the end, he not only achieved great success in his career, but also achieved a happy life.