Are supermarkets open in any types of lockdown?

i done thick like that because something important suppose open during lock down auto the corporate

We are a year into this and you still don't know grocery stores,  hardware stores, liquor stores, department stores and many other places didn't have to close? Are you living under a rock someplace?

That depends on how serious the emergency.  In China they screwed the doors shut to some apartments and if we had a pandemic with a 50% rate of death the grocery stores would not be open.  This could well happen in our lifetimes and people should have three months worth of food in their house.  

along with pet stores and other stores that supplied essentials.