2. Using the rhetorical devices of contrast, the strict requirements of mothers for their children are written.
3. "Knowing which newspaper has my article, my father can go to all post offices and newsstands in Shanghai to buy that issue. I have new books and my father always asks me for them. I signed books in the bookstore, and my father always came to watch the fun. He wrote all the joy and pride brought by his son's success on his face. " "My mother never talks about literature in front of me and never boasts about my success."
4. The author skillfully shows the mother's deep love for her children behind the stern appearance by using the writing technique of interlude.