不明觉厉
bù míng jué lì
This is a form of an internet expression. This slang term is short for “[I] don’t understand it but feel it’s awesome.”
Breaking down the word: 虽然‘不明’白你在说什么，但‘觉’得很‘厉’害的样子
Although I don't understand what you are talking about, but it feels like its amazing/awesome.
‘不明’ -> Not understanding
觉 -> feel
‘厉’害 -> amazing/awesome
The full version of this phrase is suppose to be 虽不明，但觉厉!