He is the illegitimate son of the Su family patriarch and a maid, and his family has never liked him.
Even though Su Cheng did his best to win them over under his mother's guidance, it was all in vain. Three years ago, he and his mother were thrown out of the house!
Heartbroken, Su Cheng devoted himself to his studies, hoping to use his own efforts to give his mother a better life.
Unfortunately, on the very day Su Cheng received his acceptance letter from Qingbei University, his mother was diagnosed with severe kidney disease. She needed dialysis to stay alive!
The exorbitant medical costs left Su Cheng no choice but to return to the Su family and ask his coldhearted father for money. But his father's legal wife made a condition: Su Cheng had to get engaged to a notorious troublemaker senior in place of her younger son!
To save his mother, Su Cheng could only agree to the engagement!
When the unruly senior appeared before him on a motorcycle, wearing smoky eye makeup, Su Cheng could practically see himself getting beaten by his future wife.
But the next second, the senior handed him a paternity test from a private hospital and said gently, “Su Cheng, you're the Su family's real young master!”
Years later, Su Cheng, now a prosecutor, looks at his wife, who has ties to the underworld, and says, “Do whatever you need to. I've got everything covered!”
I don't quite understand this setting. The protagonist is biological, so who is the biological mother of the protagonist?