猛然回头转身
[mĕng rán huí tóu zhuăn shēn]
'Suddenly looking back and turning around' likely depicts a fleeting yet poignant moment of emotion, commonly seen in drama and literature scenarios. This could be about encountering something (or someone) unexpectedly, feeling an urge to look back, and then quickly leaving, which conveys the complexity and transience of some emotions or relationships.