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In China, heavy cell phone users are known as the ditouzu. This slang term roughly translates to the “heads-down crowd,” and describes the types whose heads stay glued to their screens in all situations: at work, on the subway—even in the bathroom.

Nonstop cell-phone use is a phenomenon not unique to China, though the country has seen its share of injuries from so-called “text neck,” the hunched posture required for marathon scrolling sessions.

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Cassidy McDonald

Cassidy McDonald is a Beijing-based multimedia journalist who covers technology's effect on Chinese society. She tweets at @CMcD123.