show one 's horns
Guitouguinao, a Chinese idiom, is spelled Gu ǐ t ó ugu ǐ n ǎ o, which means to describe the behavior of secretive, not aboveboard. It's from the second moment of surprise.
Idiom explanation
Ghost: it describes people as insidious and cunning.
The origin of Idioms
Ling Mengchu of Ming Dynasty, Volume 20 of Er Ke Pai an amazement: "Chao has a brother, Chao Dalao. He is a ghost. He flatters his elder brother and sister."
Idiom usage
Combined; attributive; derogatory. Chapter 46 of Wu Jingzi's unofficial history of the scholars in the Qing Dynasty: "I told the little fellow quietly and asked the housekeeper to call two in. I don't know what to say, so I asked you to come out. " His ghostly appearance is very annoying.
Chinese PinYin : guǐ tóu guǐ nǎo
show one 's horns