What idioms are there to describe "the blind"?

Two couples support each other, the blind man puts candles, the blind man breaks the plaque, the blind man touches the elephant, the blind man touches the fish, the blind man touches the horse and the blind man touches the elephant.

1, two couples supporting each other [Li m:ng gāng fú]

Interpretation: Two blind people help each other. Metaphor means that neither of us can get help.

Source: Han's Biography of Han Poems, Volume 5: "It is fortunate that the two couples trust each other without hurting the wall or being trapped."

2. Blind people hold candles.

Interpretation: Blind people hold candles for lighting. Metaphor doesn't work.

Source: "Wild Acid Exposes Words" in July 5th: "Every time the ancients regarded Chen Shoudi and Wei as non-Shu emperors, the negotiators always talked about candles."

3, the blind man broke the plaque [xi ā z ǐ du à n bi m: n]

Interpretation: The blind judge the words on the plaque at will. It is impossible to draw a correct conclusion by cross-referencing.

Source: Section 10, Chapter 2 of the History of China's Literary Criticism: "Therefore, there are four schools of Qi, Lu, Han and Mao in the Book of Songs, and the theory of the four schools is like a blind man breaking a plaque, each for his own, and the result is similar to that of many parties."

4, the blind touch the elephant [xi ā z ǐ m not xidang]

Interpretation: metaphor is a half-knowledge of things, not judging the situation.

Source: Li's "Dance of the Monty Devil" Chapter 26 "If you don't figure it out, but judge the general trend of this economy, isn't it equal to the blind touch the elephant?" .

5, blind fish [xiā zi m not yú]

Interpretation: metaphor is blind and lacks investigation and research.

Source: Mao Zedong's "Transforming Our Learning" Chapter II: "Catch Sparrows with Eyes Closed" and "Blind Fish", careless, boastful, and content with a little knowledge, this extremely bad style completely violates the basic spirit of Marxism-Leninism, and still exists among many comrades in our party. "

6. Blind people blind horses [xi]

Interpretation: blind people ride blind horses. Metaphor is blind action, and the consequences are very dangerous.

Source: South Liu Song Yiqing "Shi Shuo Xin Yu": "The blind ride a blind horse; In the deep pool at midnight. "

7. Many people touch elephants blindly.

Interpretation: Many blind people touch an elephant, those who touch its legs say it is like a pillar, those who touch its body say it is like a wall, and those who touch its tail say it is like a snake, arguing with each other endlessly. Metaphorically, the problem is one-sided.

Source: Nirvana Sutra 32: "Those who touch the teeth are like reed roots, those who touch the ears are like dustpans, those who touch the nose are like pestles, those who touch the feet are like wooden mortar, those who touch the spine are like beds, those who touch the abdomen are like urns, and those who touch the tail are like urns.