Lord Chief Assistant, Your Ex-Wife Committed Suicide.

In the previous life, a divorced couple had a car accident and both passed away. She arrived ten years late and disguised herself as a man to take the imperial examination; he arrived ten years early and became the chief minister with all the power in the government. When they met again during the palace examination, he recognized her handwriting at a glance - "Your handwriting was taught by me." The court teamed up to fight powerful ministers, pacify the palace, and support the young emperor. After success, he retired to the countryside. She resumed her real name Liu Ruyan, and he proposed again: "I will never forget her, I miss her like crazy."