发扬光大 fāyáng-guāngdà to develop and promote
to develop and promote; to carry forward; to bring to great height of development
How to remember 发扬光大: 发 send out + 扬 make known + 光 light + 大 big = to develop and promote.
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How it is used
- An idiom: 'to carry forward and bring to full flower' - 把优良传统发扬光大 (to carry forward and glorify a fine tradition).
- An intensified 发扬: not just to continue something good but to develop it to new heights. Formal, aspirational register.