Let me just say this upfront: chapter 4 is basically one giant exposition dump and I was supposed to hate it. Instead, I couldn't stop reading. Here's why it works.
The author could have just dumped all this worldbuilding at once—ration system, salary structure, black market prices, the famine history—and bored me to death. But instead, it's filtered through Xia Baozhu's practical, slightly cynical brain as she's trying to figure out her actual situation. She's calculating: monthly salary twenty-six yuan, ten cents per bath, three yuan a month if she bathes daily—that's a significant chunk. Her mother earns seventy-six, her father forty-two, but after subsidizing their respective families, they're down to eighty-eight yuan. 'What a level of filial piety and devotion!' she thinks, and I was cackling.
The pacing here is clever because every piece of information serves a dual purpose: worldbuilding AND character development. We learn about the famine rations (42 jin fine grains dropped to 32 jin mixed grains, cooking oil from 500ml to 200ml), but we also learn that Xia Baozhu is the type of person who immediately starts calculating how to survive in this economy. She's not panicking. She's making a spreadsheet in her head.
Then there's the flashback structure—we get the original host's backstory woven in naturally as Xia Baozhu processes the memories, and it creates this really effective emotional counterweight to the dry economic details. One moment you're reading about black market pork prices (ten yuan per jin!), the next you're reading about a girl who died from a fever because her coworkers wouldn't talk to her.
The chapter ends mid-thought actually, with Grandmother Xia talking about meat distribution changing from once a year to once every few months, and the text just trails off. It's a cliffhanger of sorts—not dramatic, but it creates this sense that the world is slowly opening up, that things are improving, and Xia Baozhu is about to step into that improving world with her modern skills and zero sentimentality.