Zhang Shasha stares out the window at a rare, blue, Beijing sky. "Next week I can go out," she says. "I miss outside!"But for now, she has to remain indoors, wrapped in a thick sweater and woolen hat, even though it is a warm spring day. Considered crucial for new mothers and their babies, they are expected to remain indoors for at least one month after giving birth, following a strict and elaborate set of rules like not washing their hair and eating pigs feet soup.
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