Path to Immortality Begins With Marriage - Chapter 81: Veronica and Vanessa, Sebastian’s future wives

A man was transported to Ancient China and eventually became a servant of a declining household without a male heir. He utilized his wits and modern knowledge to help the household and eventually become trapped in the sea of political turmoils of the period.

- Description from Novelupdates

The former Immortal Ascension Realm Cultivator Wang Che failed to overcome the Heavenly Tribulation, and as a result, his soul transmigrated to a world of the Martial Soul where soul beasts and humans lived together peacefully.

This is the interstellar era, an age where humanity has ignited a frenzied tide of biological evolution—The myriad races of the cosmos clash ceaselessly, the alien gods of the Subspace scheme in the shadows, and the entire universe is plunged into the raging fires of an unending war.Armed with an ultimate Grinding System, Qin Feng rises relentlessly to the top. From an absolute nobody to a legend echoing across the stars, watch as he reforges the glory of the Human Empire!

With the revival of spiritual energy and the breakdown of the order of species, it is a difficult test whether human beings can still stand at the top of the biological chain.

(There is already an old book, The Strongest Descends in the City, you can read it.)

- Description from novelbuddy