别扭的孩纸心未泯
[bié niŭ de hái zhĭ xīn wèi mĭn]
'Bienuo de haizi xin weimin' implies the innocence and naivety of a child have not been completely erased, even as one becomes more 'stubborn' or 'awkward.' Here, the phrase '孩纸 (haizi)' is an internet slang way to say 'child,' which is often expressed by misspelling '孩子 (haizi)'.