bad money drives out good

Etymology
Traditional sentiment, both in literal and metaphorical sense, dating to ancient works such as ' , and appearing in various forms in various Islamic and European medieval texts.

Proverb

 * 1) Debased coinage (with low levels of precious metals) replaces purer coinage (with higher levels of precious metals).
 * 2) People hoard good currency and other assets and attempt to pass inferior currency and assets to others in exchange.
 * 3)  Overvalued mediocre talent replaces undervalued real talent.

Translations

 * Chinese:
 * Mandarin:
 * Japanese: 悪貨は良貨を駆逐する
 * Korean: 악화-가 양화-를 구축-한다