and there is no explanations for it...
City was always with 1 essence after scrying pool was built.
So, what is that?
I vbelieve you should have more pop up explanations for any things. also,
zooming in on a city part should show the letters naming it since icon doesn't correspond to the city part image when zoomed up close (merchants are fardifferent then icons in city descriptions show) - I ran into problem when I tried destroying parts of city to enable sufficient space for close by city for lumber camp.