海很蓝却致人溺亡森很绿却致人迷途
[hăi hĕn lán què zhì rén nì wáng sēn hĕn lǜ què zhì rén mí tú]
This describes contrasting scenery with hidden dangers: beautiful but perilous blue sea leading to drowning; lush green forest leading to getting lost. It illustrates a juxtaposition between appearance and reality.