3. Appreciate "there is a world of repair, and mechanics are a group of elves in the dark".
A rhetorical device of metaphor is used. It is very vivid, and the blind man in the alley has become a masseur who can cure diseases, and he is full of praise for the blind man in the alley.
4. What kind of people are the blind people in the alley? Please briefly analyze the specific cases in the article (from two aspects)?
(1) has a strong willpower, and he forgot it for so long, but he didn't give up. Instead, he learned massage skills.
(2) Love life and be optimistic. Obviously, you don't need to light a lamp, but you still light it, which shows that you are also a beacon for others and can bring hope to others.
5. The article ends with "This is a narrow lane". What role do they play in structure and content?
The structure corresponds to the beginning, and the content emphasizes that the appearance of the alley has not changed much, but the spirit of the blind inside has changed, expressing optimistic praise for the blind.