天未蓝海未深
[tiān wèi lán hăi wèi shēn]
'Sky Not Blue Sea Not Deep,' can suggest unfulfilled expectations or emotions about life, the future, or love. Here, the sky not yet blue can metaphorically imply hopes that have not been fully realized, while the sea not being deep enough might symbolize a lack of profound or complex sentiments, possibly reflecting a feeling of incompleteness or desire.