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The crew members of a China Southern Airlines flight have earned widespread praise for their swift and professional response to a medical emergency in the air.

According to a report by People's Daily, at 9:35 pm on Feb 8, Flight CZ6304 departed from Shenzhen for a four-hour journey to Shenyang. An hour into the flight, as the cabin crew began in-flight service, lead flight attendant Li Yan noticed a passenger looking pale and visibly unwell.

"The passenger's eyes were bloodshot red, abnormally flushed hands, swollen and reddened arms and lower legs, and a forehead covered in sweat," Li recalled.

Upon inquiry, Li learned that the passenger had a history of high blood pressure and a mild stroke.

Acting swiftly, she made an in-flight announcement seeking medical assistance and provided the passenger with oxygen support.

However, despite two repeated calls, no medical professionals on board responded.