In the Lean Years at the Beginning, I Relied on the Vegetable Market to Escape the Famine

Reborn in a different world, starting in the bad years, with a stupid brother and two little kids, how can you survive? Also, I have a golden finger, I have the vegetable market in hand, and I have all the supplies, so I don't have to worry about food and drink! They are interested in my supplies and want to plunder them, but it depends on my skills whether I will agree!