once again my fuzzy brain got all confused and I can't sort out the details to complete successfully a search ...
the story I'm looking for is maybe a time travel
set in the old west
the MC collect a harem
at one time he walks in china town and had a run in with the head of a family about a Chinese girl he somehow acquired ...
the elder of the family step in and they have some sort of talk and to manage the susceptibilities the girl ends as his concubine or something
the Chinese businesses have some sort of steam network running between the buildings