海阔天空

Explanation: Vast as the sea, as boundless as the sky. Describe the broad nature. Such as rambling discourse metaphor discussion, there is no center. 　　Usage: Joint type; as predicate, object, adverbial; describe the vast 　　Source: Tang Liu Yao, "parting the dark": "Zhu string broken but no one is dark, wind flowers on Film; Qingluan softly flew west, I do not know at a brighter future." 　　Examples: People always envy ~, that a vast, no boundary or edge, certainly very impressive. (Qing "Flying") Thesaurus:  with much land and few people; small population for a large area; vast and sparsely populated area, (a country) vast in territory and rich in natural resources, (said of a country) very large, Were diluted to mine, amplitude scope of operation, vast land and numerous people