Shocked, the Fake Young Master Is so Powerful

The apocalyptic doctor traveled through time and became a fake young master in an ancient palace. The fake young master accidentally died! He traveled through time and unexpectedly awakened his supernatural powers in this ancient time where there were no zombies or mutated animals and plants, and gained a portable space. Let's see how he became famous in ancient times and gained love and family! It's a cool novel, just write it in a way that makes you happy, with a single female protagonist! Those who want to start a harem should not come here. The author doesn't like harem stories! I don't know how to write an introduction, so just make do!