Abandoning the Pen and Holding the Sword: I Will Not Marry the Princess Unless I Am?

Single female protagonist + not invincible + no system + Machiavellian + growth Not invincible, not invincible, don't complain if you mind Defending the family and the country, safeguarding the imperial power, starts from becoming a scholar. Let's see how a weak scholar grows up to become a general who protects the country Defeat enemy generals, kill traitorous ministers, marry princesses, and become a legend! The Emperor: Foreign tribes have invaded the border. Do the generals have any strategies to retreat from the enemy? Xie Shaoyuan: I'll kill them Emperor: Alas, none of my sons can save fuel! Xie Shaoyuan: I'll kill them Emperor: I feel a little headache today Xie Shaoyuan: I chopped it... Ah, no, no