Dai Hua’s grandfather writes about laughter in many places. What’s the purpose?

I wrote about my grandfather’s kindness, simplicity, good temper, and love for me.

The description in the article: "He put down his hat and laughed too. He couldn't stop laughing for more than ten minutes. He finally stopped. When he thought about it, he laughed again." This is Grandfather knew that the fragrance of the roses was not because of the heavy rain this spring, but because the flower was smiling on his head, expressing his joy at "my" naughty behavior. I felt my grandfather's care for "me".