脸一阵红一阵白
[liăn yī zhèn hóng yī zhèn bái]
'Lian Yi Zhen Hong Yi Zhen Bai (Face Turning Red Then Pale Suddenly)' describes rapidly fluctuating emotions manifesting physically like blushing cheeks followed by pallor due to embarrassment or strong reactions; using it could highlight dramatic shifts within mood states or responses to varying stimuli