The significance of the vast sea of smoke

As vast as a foggy ocean.

[Pronunciation] [hà o rú y ā n h m: i]

[Interpretation] Hao: Vast; Sea of smoke: the vast sea. Describe the richness of classics and books.

[Source] Guan Zhen's "Dream Fu" in Sui Dynasty: "If the husband's law is deep, its mystery is hard to find, and it will never die. The color is not its heart, and it is vast and gloomy, like Deng Lin."

[example] ancient and modern records, ~. (Qing Zhou Yongnian, "Confucianism and Ji Zang")