況まして

Even a child knows it. To say nothing of adults, who should naturally understand.

Japanese is already difficult, not to mention Chinese, which is even harder.

It's impossible for an ordinary person. Still less could an elderly person manage it.

It was already difficult to carry the luggage alone. To say nothing of carrying enough for two people — that must have been utterly impossible.

It is said that the budget is insufficient even in peacetime. Still more so in an emergency, the shortage would become a serious matter.