I Became the Crown Prince's Concubine After Binding to a System

Just writing for practice, making it up as I go. Adding more to make it entertaining, adding more to make it entertaining.

Zhu Zhenzhen had a dream that her whole family was killed. Then something called the System told her it could save her family, on the condition that she bear children for the Crown Prince. She agreed.

Remembering the horrific deaths of her father and brothers, who had doted on her in the dream, Zhu Zhenzhen secretly vowed that she would give the Crown Prince lots and lots of children!