The Biological Son Works While the Adopted Son Rides in Luxury?

Although the content of the story is relatively rich, the essential skeleton is still a piece of pseudo-humanities. The parents in the article are completely anti-human and irrational in their treatment of their biological son. Although the male protagonist is not very good-looking, he is diligent and motivated, loves his parents, and gives all his part-time scholarship money to his parents! But these rich parents deliberately pretended to be poor, abused their son, and even gave the family property to an unrelated person!