萬丈高樓平地起

wànzhànggāolóupíngdìqǐ

the loftiest towers are built up from the ground; great oaks from little acorns grow

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萬丈高樓平地起|万丈高楼平地起 [wàn zhàng gāo lóu píng dì qǐ] ► towering buildings are built up from the ground (idiom) ► great oaks from little acorns grow