In the Military Training for New Students, the Instructor Was Actually Her Subordinate

[The female protagonist is decisive in killing, the male protagonist is cold and domineering to the outside world, and he is a arrogant little white lotus to the female protagonist] She joined the War Department at the age of fourteen and became the God of War of the Xia Kingdom at the age of nineteen. Today, she returns in glory! However, as soon as she got off the plane, she learned that the overbearing president was bewitched by White Lotus and wanted to kill her six-year-old brother? Very good! She will know the consequences of offending her! What? ! The president's father is a high-ranking official in the war department? Knowing that she broke the CEO's legs, he came to settle the score with her? She sneered and directly threw out the war department badge that was two levels higher than the opponent: "If you don't want to be in the war department anymore, just get out of here!" (The opening chapter goes against the routine of slapping the domineering president in the face. The president is not the male protagonist)