Bone Erosion in Jinnian

"After rebirth, I became the sharpest knife for my enemies." Core summary: In her previous life, she was his queen, but she was killed by him and shot through the head with an arrow. After her rebirth, she actually became a female secret guard under his command. From then on, she worked step by step in the dark, vowing to make him pay the price, but unexpectedly discovered that there was a deeper secret hidden behind the death of her previous life...