It's Not Easy to Be a Man After Travelling to the Future (WN) - Chapter 6: A Shameless Person

Legend says that Star World’s million Star Names are passed on in the form of young maidens as famous existences in the Three Thousand Worlds.Henceforth, Chen Mo heroically says as he brandishes his massive weapon at the heavens and shouts towards the beautiful but aloof Chen Qingzhi, towards the tyrannical Caesar, the tsundere Xiang Yu, the yandere hi*ler, the extraordinary Chen Tuan, and other girls.“My big stick’s hunger already can endure no longer…”

“I was nothing... and now, I have one chance to steal everything.”In his previous world, Ethan was just another failure. No talents, no dreams, no hope.But death wasn’t the end it was a new beginning.He wakes up in the body of “Valerian Lucard,” the son of a great family... but the weakest among them. Neglected, shunned, broken.But this time, things are different.He has an unbelievable ability:Fate Theft.Skills, talents, future opportunities... he can steal them, but at a heavy price.And the worst part? What’s stolen... never lasts.Now begins his race against everyone: the elites, the geniuses, the chosen heroes.Not because he's strong, but because he refuses to be nothing... ever again.In this world, either you steal glory... or everything gets stolen from you.

A con-man and policewoman that are legends of their respective professions suddenly die, then are reincarnated and return to the Tang Dynasty of ancient China as little kids.

Accepting their second chance and forced restart, they choose to use the modern knowledge and specific talents that they have in their previous lives in order to live comfortably in this new life.

- Description from Novelupdates

“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.