海闊天空

The sea or ocean; a large body of saltwater; a great number of people or things; a vast expanse.

Wide; broad; ample; rich; wealthy; abundant; spacious; open-minded; extravagant; rare; scarce.

Sky or heaven; the universe; day or a period of time; nature; weather; season.

empty; vacant; unoccupied; air; sky; space; in vain; to empty; leisure; free time; bare; deserted; vast; high