What are the idioms to describe ignorance?

Idioms to describe ignorance are:

A, countless [x and n zh not ng wú sh] in my heart? 1.? Explanation: I don't know the situation clearly, and I have no bottom in my heart.

2.? Said by: Yao's Li Zicheng, Volume II, Chapter 31: "After a week, I was full of thoughts and said,' You can do this little thing yourself, and you don't need to ask me.' "

Second, I don't know anything [y and qià o bê t not ng]? 1.? Explanation: orifices: holes, pointing to the heart. Nothing passed. I don't understand metaphors at all.

2.? Said by: Lu Chunqiu and Li Guo: "It is better to kill than to do it, just look at his heart. Hearing this, Confucius said,' Mastery never leads to death.' "Gao:" you are heartless, you can't understand, you are willing to do evil, killing people is not as good as being an official. Therefore, Confucius said, if you know everything, you can say everything. "

3.? Example: Although he is an idiot, there is no such official as the "mayor" in Shuangqiao Town, and he understands it.

Third, I don't know why [bù zh and su ǒ y ǐ]? 1.? Explain: use: reason. I don't understand why this happened. I don't know why.

2.? From: Tang Yanyuan's Preface to the Collection of Fa Shu Lan Ting: "I don't know why."

3.? Example: Mimi suddenly picked up a pot cover and banged it with bone chopsticks, knocking him ~, panicked and confused. ?

Fourth, I don't know [bù shè n li ù o li ù o]? 1.? Explanation: very: very; Yes: I see. I don't understand. I don't understand.

2.? From: Hong Song Mai's "Yi Jian Zhi Ding Huangzhou Savage": "I didn't know much at first, but I couldn't speak after a few days. It is a real person. "

3.? Example: going home for three years, outside things, ~. ?

Verb (abbreviation of verb) knows nothing [y and w ú su ǒ zh and]? 1.? Explanation: I don't know anything.

2.? From: Feng Ming Menglong's "Warning Records" Volume 15: "Pupils fall down after watching it, pick it up and wake up for a long time. I know nothing about it. "

3.? For world history, he ~.