What are the idioms that describe poor learning?

In a complete mess yī tā hú tú is translated as chaos or corruption that is beyond control. Source: Guo Moruo's "Revolutionary Spring and Autumn Period·Student Times": "The newly opened middle school is even more of a mess, full of jokes."

Being sleepy but not learning kùn ér bú xué translates as being sleepy: confused, not understanding. Confused and unable to understand but unwilling to learn.

The translation of mù bú shí dīng does not even recognize the most common word "ding". I don’t recognize a single word to describe it.

There is no ink in the chest xiōng wú diǎn mò Translation There is no ink in the belly. Refers to people without culture.

superficial end of learning fū qiǎn mò xué Translation: superficial end of learning is an idiom, the pinyin is , which refers to shallow knowledge. Source: Jin Fan Ning's "Preface to the Spring and Autumn Annals of Liang Zhuan": "Although there are nearly ten interpreters of "Gu Liang Zhuan", they are all superficial and unlearned, without any masters."

Ill-learned and ill-informed dú xué guǎ wén Translation: independent study: refers to self-study without guidance and discussion. If you study alone without anyone to discuss with you, you will be ignorant and ignorant. Described as lonely and humble, with little knowledge and experience.

鹹鹹雯gulun gǔ lún tūn zǎo Translation: Swallow the dates whole without chewing them carefully to discern the taste. It is often used as a metaphor for learning without analyzing.