BEIJING, July 13 -- 23 spaceflight mission's three-person crew have successfully tested an upgraded in-orbit mass measurement device at the country's space station as they near their 50th day in orbit while continuing an expanding range of scientific experiments.

According to a video released by the China Manned Space Agency (CMSA) , astronauts Zhu Yangzhu, Zhang Zhiyuan and Li Jiaying also carried out several experiments over the past week focusing on space life sciences and human research.

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As part of a musculoskeletal loading study, the crew conducted plantar pressure measurements, lower-limb biomechanical tests, and muscle-tendon assessments while running and performin...