distric

I know that it's possible since a few other districts can already be built regardless of city population, but I'm extremely new to modding and was wondering how that could be recreated in a mod. Any help would be greatly appreciated!

Well first of all probably taking from civ 5 experience I was pretty early with campus districts in my capital and most of my early cities. I did heavily focus on production too, but in retrospective it seemed a bit too late. I only made theater district when I had a feeling I was falling behind...