Managing 8 heroes on the map.

Usually, that's how it works for me – I get 5-6 heroes on the 1st day and then buy one hero every day or two, bringing their number up to 7-8.

The question is certainly interesting.
General to his orderly:
- Go get some vodka!
- Give me money!
- Even a fool can get it with money!
The orderly went and brought a bottle. He gives it to the general.
- What did you bring? It's empty!
- Even a fool will get drunk with a full one!

So, on the first day, a hero appears, finds 1-2 chests with 1000 each, and the turn ends. There's no money in the treasury (the game is 200%!). On the second day, in the morning, 500 arrives – you can immediately get another hero, gather some money, and buy a 3rd. And that's it, the freebies are over. After that, you need to break through the defenses, often quite strong, and for this, it won't hurt to build and buy an army, because a free army with heroes will only be available in a week.
The question is: Where can you find these 10000-12500 free coins on the first day, which should be located within a day's travel from the Castle and with almost no guards?