guess you want somethng like Mo Dao Zu Shi. sadly there are not much around,
only few chaps - you will have more luck wiht novels then. but there are other good
historica and/or fantasy ones around:
that one is pretty dark but good. no fantasy but historical
http://www.mangago.zone/read-manga/orchids_of_endless_nights/
sooo cute this here, fantasy + ancient times
http://www.mangago.zone/read-manga/awairo_emaki/
again more dark but beautyful like a fairy tale
http://www.mangago.zone/read-manga/zhen/
also nice read
http://www.mangago.zone/read-manga/shounen_to_kusuriuri/
love this, but just bromance
http://www.mangago.zone/read-manga/jinjuu_houretsuden/
This seems like your best bet
http://www.mangago.zone/read-manga/king_s_maker/
Though I would also recommend this one as it's also historical
http://www.mangago.zone/read-manga/barbarities/
Are there any good BL with poor bottom (or top, I'm not picky) set in ancient times? Best if it has fantasy too.
Also, only ancient time / fantasy would be great too! Chinese / korean webtoons prefered but normal manga is good as well. ヾ(❀╹◡╹)ﾉ~