[Female lead's perspective]:
Three years ago, the Duliang army invaded. In a single night, Dazheng fell, and all the women in the imperial palace were captured as spoils for the army. The eldest princess, Lu Jinzhi, would not endure the humiliation. She died by the sword of Zhou Yu, the young general who had made a name for himself and dominated the battlefield.
When Lu Jinzhi woke again, she had been reborn as the daughter of Duliang's Grand Tutor. The young general Zhou Yu had become the powerful Regent, but a supposed curse had left him sickly. By a twist of fate, Lu Jinzhi was made his princess consort to bring him good fortune. She went along with the arrangement, waiting for a chance to assassinate him. But Zhou Yu showed none of the weakness of a sickly man, repeatedly thwarting her plans, and was exceptionally fond of her. Later, the truth came to light, and they fought each other to the death.
When Lu Jinzhi woke, she had returned once more to the moment her country fell. She looked up at Zhou Yu, standing with his sword in hand, her thoughts complicated. In her first life, she had died for her country; in her second, she had fought him to the death. She was tired in this life and decided to give up trying, letting him take her back to camp as a prisoner of war. In the military tent, Zhou Yu lifted her chin with his rough thumb. "My princess consort, it's been a long time."
[Male lead's perspective]:
Three years ago, with the enemy at the gates, a woman in fine clothes died by Zhou Yu's sword. The blood from her heart splashed across his face, scorching hot. Not long after the war that destroyed her country, his father died of illness and his eldest brother took the throne. Zhou Yu was stripped of his power and framed to death. Reborn, Zhou Yu became a sickly man. He overthrew his eldest brother, took his young nephew hostage, and rose to become the Regent, feared by all.
At a palace banquet, Zhou Yu unexpectedly shared an intimate moment with Lu Jinzhi and discovered that being close to her eased his illness. To find a way to break the curse, he schemed to marry her, but gradually realized that his princess consort's eyes looked familiar. Only later did he learn that she was the fallen princess who had once died by his sword. But she gave him no chance to make amends. She tested poison on herself and took him down with her.
When he woke again, Zhou Yu had returned to the moment her country fell. The woman looked at him differently, and he understood that she recognized him. This time, he finally had a chance to make amends. Even if that chance was insubstantial, he was willing to stay by her side, day after day and night after night.
Note: The female lead is reborn twice, and so is the male lead. His second rebirth takes him back to the beginning.
"Even if that chance is insubstantial, he is willing to stay by her side, day after day and night after night" comes from the internet, with changes.
Theme: Love can be the key to resolving any grudge.
It needs a major overhaul, and the latest updates are uncertain.