My Maid Is the God of War. I Want to Buy a General to Be My Wife.

General Zhenbei was demoted to civilian status due to his father's involvement in the rebellion. He was bought by the male protagonist as his wife and started a new life. Later, the mystery of his life experience was solved and he regained military power and became the core of the royal family. No system, the protagonist is not invincible, not time travel, fictional historical novel