towering buildings are built up from the ground (idiom)
great oaks from little acorns grow
Definitions (粵典–words.hk)
語句
比喻做嘢要由基礎開始 everything begins with the foundation; great oaks from little acorns grow; literally: towering buildings are built up from the ground
參看
萬丈高樓從地起
Definitions (Wiktionary)
proverb, figuratively
take care of the pennies and the pounds will take care of themselves; many a mickle makes a muckle