LONDON -- Disruptions now affect four out of 10 flights in China as punctuality deteriorates sharply, new research shows.

Business
China's airports losing battle with delays
Military's airspace dominance seen behind worsening disruptions
Military's airspace dominance seen behind worsening disruptions
LONDON -- Disruptions now affect four out of 10 flights in China as punctuality deteriorates sharply, new research shows.
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