Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 4 - 4-9. Things That Could be Done Alone

"An accident. She's pregnant. How unlucky. She got pregnant in one shot!

Always looked down upon by others, Ji Feng gains technology far more advanced than the present, as he discovers its abilities, he begins to walk a path far from ordinary. With X-ray vision allowing his to find jade stones in rocks. With this futuristic technology, Ji Feng accomplishes something no-one can compare to. This is the beginning of a legend.

- Description from Novelupdates

The story follows Danheng, who transmigrates to the Douluo Continent seeking a peaceful life, only to be persistently pursued by Gu Yuena, who insists on becoming his wife. She encourages him to strive for greatness, aiming for him to become the leader of soul beasts, the Dragon God, and the ruler of the Divine Realm. Despite his desire for a quiet life as a librarian, Danheng finds himself entangled in various challenges due to his wife's ambitions.

Year 24XX. With several hundred years of improvements, virtual reality has become more mature. It had gradually become humanity’s second world. Socializing, working, studying and other everyday things could all be done while sleeping.