Princess Blood Coffin: Prince Regent, You Bit the Wrong Person.

Title: "The Blood Coffin Princess: Prince Regent, you bit the wrong person" The main plot: Jiang Zhaozhao, the female guardian of the mausoleum of the Yan Dynasty, accidentally contacted the imperial mausoleum mechanism and unlocked the regent Murong Ye who had been sealed for hundreds of years - her true identity was a prince-level vampire who was persecuted by the royal family. After awakening, Murong Ye bit Jiang Zhaozhao to regain her strength, accidentally establishing a blood contract (requiring mutual dependence for survival), and brought her back to the palace and named her "Blood Princess". Jiang Zhaozhao was forced to stay in the palace in order to find his missing sister. While dealing with Murong Ye's possessiveness and torture, he searched for clues about his sister in the imperial mausoleum. Murong Ye used her purifying power to control his mania and at the same time planned revenge on the royal family. The two gradually fell in love while using each other, but they fell into opposition because of Jiang Zhaozhao's identity as the descendant of the sealer. After experiencing misunderstanding, betrayal, and sacrifice, they finally made a choice between "revenge" and "keeping together": Murong Ye gave up revenge to protect Jiang Zhaozhao, but was wiped out by the backlash of the blood contract. Jiang Zhaozhao returned to the imperial mausoleum with his bones and spent the rest of his life guarding the memories of the two of them.