I am a Gao Fushuai Villain - Chapter 519:

“Dafeng Night Watchman” tells the story of modern policeman Xu Qian'an who traveled to the Dafeng Dynasty. As soon as Xu Qian'an traveled through time, he was involved in the case of the loss of his second uncle's tax silver. He was later implicated and imprisoned and faced exile, but he successfully solved the case with his past life experience and wisdom, rescued himself and his second uncle's family, and joined the night watchman organization. After that, he encountered various murders, political struggles, and entanglements with mysterious forces. He killed his superiors in anger to save the female relatives of the prisoners, was involved in the Sangpo case, participated in the struggle between Buddhism and the Kingdom of Ten Thousand Monsters, and entered the sight of major forces. In the end, Xu Qian'an realized that his mission was to plead for the people and protect the weak. He began to run around for the people of the world, promoted the alliance between Dafeng and the Southern Xinjiang Gu Clan and the Kingdom of Ten Thousand Monsters, and joined hands with Princess Huaiqing to launch a coup to save the people of the world. The novel combines a variety of cultural elements such as Confucianism, Taoism, Buddhism, the demon clan, and sorcerers, showing Xu Qian'an's intelligence and detective skills.

Back in 1998, an ordinary person who has been through, tired, cried, and fought, hopes to run down-to-earth and keep up with the trend of the times.

- Description from novelbuddy

Pei Jin is a black bellied prince. To outsiders he is a kind gentleman and always calm.

After a shocking reincarnation, our hero opens her eyes to a new (and messy) world the last thing she remembers is reading Lady Viper’s Vow, a dark fantasy novel about a cruel, misunderstood villainess and her path of doom. But when our protagonist finds herself reborn right in the heart of an attack, she’s moments away from a second, way-too-soon death. Just as she’s about to face the end, a mysterious “system” pops up with a single mission: Level Up or Die Trying. It’s bossy, snarky, and her new best friend. As she levels up into a borderline-cheater powerhouse, she discovers her fate isn’t to be a hero, a princess, or even a sorceress, but to protect the one person no one ever expected her to side with: the villainess herself.