HSK 7-9
发扬光大
fāyáng-guāngdàto develop and promote; to carry forward; to bring to great height of development
我们要把优秀传统发扬光大。
Wǒ men yào bǎ yōu xiù chuán tǒng fā yáng guāng dà.
We should carry forward and promote fine traditions.
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Appears across levels (7-9) in the HSK 3.0 word list.