This sentence comes from Zhu Ziqing's back, as follows:

That winter, my grandmother died and my father was relieved of his job. This is a day when it never rains but it pours. I went from Beijing to Xuzhou, and I plan to go home with my father. I went to Xuzhou to see my father, saw the messy things in the yard, and thought of my grandmother. I can't help crying. Father said, "Well, don't be sad, but God never shuts one door but he opens another!" " "