Are there any sect cultivation building or farm building with system or given powers, or just kingdom building with isekai powers or something similar, would prefer male MC and focus or atleast not neglect of expanding its sect/farm/kingdom, doesnt matter if there romance or harem or there are non at all. Some examples: History’s number 1 founder Bringing The Farm To Live In Another World Isekai Nonbiri Nouka Overlord Death Mage Doesn't Want A Fourth Time Maou-sama, Retry!
The Path Toward Heaven (though this is more getting the peak up to strength) Lord of the Mysteries (Again not directly kingdom-building but more of a club gaining strength) Sovereign of Judgement Sovereign of three realms (I'm a little fuzzy on this one though) History's Number 1 senior brother All of these are close to the genre you want but not exact sorry :/ but they are good!
The King of The Worlds - https://www.novelupdates.com/series/the-king-of-the-worlds/ Hail the King - https://www.novelupdates.com/series/hail-the-king/ World Domination System - https://www.google.com/amp/s/m.webnovel.com/amp/book/11413811606356705