Chinese cities are speeding up construction of subway lines as the increasing number of vehicles in urban areas has been largely blamed for smog.
A netizen's tongue-in-cheek "top torture ranking" of modern inconveniences has become a hot topic in cyberspace and aroused fresh discussion of the pressure Chinese people face in a fast-developing country.
A technical glitch that disrupted passengers on the subway in Beijing for nearly two hours Monday morning has raised questions about safety and operator's abilities to tackle emergencies.
Beijing's Line 4 subway line suspended operation in the rush hours on Monday morning due to signal failure.
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