青春逼良为娼后开始腐烂
[qīng chūn bī liáng wéi chāng hòu kāi shĭ fŭ làn]
A rather dark expression meaning that innocence is lost or exploited (figuratively forced into immorality) leading to internal decay or corruption, often metaphorically speaking about the hardships during youthful years which lead people down a wrong path in life.