The explanation of "learning half" is: teaching is half of learning.
Source: From "Although there are fine dishes" in "Book of Rites·Xue Ji" in the Western Han Dynasty, if you know your shortcomings, you can then reflect on yourself; if you know your difficulties, you can then strengthen yourself. Therefore, it is said: Teaching and learning are mutually reinforcing. "Dui Ming" says: "Learn half a lesson." What does this mean?
Translation: Only after you know your own shortcomings can you reflect on yourself; only after you know what you don’t understand can you encourage yourself. Therefore: teaching and learning promote each other. "Shang Shu·Dui Ming" says: "Teaching people is half of learning." This is probably the truth, right?
Appreciation of "Although There Are Delicious Foods":
"Although There Are Delicious Foods" often uses couplets, which makes it catchy and has a strong sense of rhythm. When discussing, first use the analogy of "Although there is good food, but you can't eat it, you don't know its purpose", and then introduce "Although there is a perfect way, you can't learn it, but you don't know its goodness", and then explain it from the two aspects of teaching and learning. Finally, It comes down to the conclusion that "teaching teaches each other." The ideas are clear, the writing is smooth, the writing is progressive, and the writing is coherent, giving people a sense of coherence.
Although the article "Jia Yao" uses the method of expressing ambitions to draw out the points to be clarified, it is pointed out that teaching and learning are mutually reinforcing and complementary, that is, "teaching complements each other", which tells us the truth about practice and true knowledge. The importance of work-based learning and practice, the article shows that 'teaching' and 'learning' are closely related.
The above reference source:
Baidu Encyclopedia-Although there are delicious dishes