"Boundless Oceans, Vast Skies"(Chinese: 海闊天空; Jyutping: hoi2 fut3 tin1 hung1; lit. "sea wide sky empty") is a song performed by Beyond, the Hong Kong band. Being released on 1993 in the Cantonese album Rock and Roll, the song was massively popular.The song has been also translated as "Under a Vast Sky", "Ocean Wide Sky High","Vast Seas, Clear Skies",and "Clear Skies, Vast Ocean".The song has been an anthem of Cantonese rock music and one of Beyond'ssignature songs.The iconic song was adopted in different protests in Cantonese-speaking regions, most prominently as the unofficial anthem of the 2014 Hong Kong protests.
Beyond recorded a Mandarin version, "Hai Kuo Tian Kong" (same Chinese characters pronounced in Mandarin), for the 1993 Mandarin album of the same name and a Japanese version, "Haruka naru yume ni ~Far away~" (遙かなる夢に 〜Far away〜, literally "A Faraway Dream").
