亡海溺水终悔我梦
[wáng hăi nì shuĭ zhōng huĭ wŏ mèng]
"Wang Hai Ni Shui Zhong Hui Wo Meng", if translated literally, means: drowning at sea would ultimately regret my dream - it conveys a sense of remorse over unfulfilled dreams or lost opportunities in life, expressed via a rather dark, somber mood.