A Lesson Learned from Jia Zhen at the Beginning of Crossing the Red Mansion

The protagonist faces a crisis as soon as he travels through time. By confronting Jia Zhen, he breaks his cowardly character and establishes his character. After that, the protagonist uses modern knowledge to solve the bad things at home first, stabilize the Ningguo Mansion, take the imperial examination, develop the economy, and bring the Rongning Mansion to a new level.