look thoroughly ferocious
It's a Chinese idiom. Pinyin is Xi à ngxi à NGB à L à, which means that the original disguise and kindness reveal the truth. It's from Ke Yan's the man chasing the sun.
Analysis of Idioms
[synonym] ferocious and [antonym] Smiling
Idiom usage
In Qian Zhongshu's Fortress Besieged, "Miss Sun can't leave her."
The origin of Idioms
Ke Yan's the man chasing the sun: "when Wu Bingzhi collected taxes from him, he constantly threatened: 'who has the money to give it to you, be careful with your head! '”
look thoroughly ferocious
prolonged illness makes the patient be a doctor - jiǔ bìng chéng yī
warning taken from the overturned cart ahead - fù chē zhī guǐ