it has to borrow food from russia and USA
'''Yes ...'''
yes they did.
yes
They probably grow or make their own food. And I'm sure they have food and supplies shipped to them.
when they grow adult feathers
Humans grow, hunt and process food, we bake and cook, isn't that making our own food ?
when they grow adult feathers
China is one of the main exporters of food and clothing. They grow their own.
There was no place to purchase food so they had to grow there own food.
Of course you do unless you grow your own or barter .
By grow their own food