A hole in a hole
The Pinyin is y ī K ǒ NGB ù D á, which is a Chinese idiom, meaning to know nothing.
[idiom]: a hole can't be reached
[Pinyin]: y ī K ǒ NGB ù D á
Ykbd: ykbd
I don't know anything about it.
A hole in a hole
a ruthless character behind a gentle appearance - mián lǐ cáng zhēn
Bury the wheel and break the column - mái lún pò zhù
impose upon those who are kind and fear those who are severe - qī shàn pà è