烟酒枷锁白水钥匙
[yān jiŭ jiā suŏ bái shuĭ yào chí]
'Tobacco and alcohol are shackles, pure water is the key.' It reflects someone who has been tied down by bad habits but still has the key (possibility) of turning over a new leaf with simple things like pure water. It expresses one's contemplation on life choices.