Courtyard House: I Have Countless Bodyguards

Crossing through a courtyard house, multiple women, a spatial dimension, assassins, and elements from various film genres.
The protagonist of "One Hand Qin" is rather selfish, using his spatial abilities and assassins to live a happy life.
There was nothing of the sort.
It's a very normal novel about time travel and the story of a man who transmigrates into a courtyard full of birds.