Chen Dong, one of the two astronauts in the Tiangong-II, introduces the equipment used for the in-orbit ultrasonic inspection to test their cardio-pulmonary function, on October 30, 2016. (Photo/Xinhua)
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Chen Dong, one of the two astronauts in the Tiangong-II, introduces the equipment used for the in-orbit ultrasonic inspection to test their cardio-pulmonary function, on October 30, 2016. (Photo/Xinhua)
