China's Shenzhou-20 crew, consisting of commander Chen Dong, and taikonauts Chen Zhongrui and Wang Jie, have been in orbit for over three months, advancing multiple space science experiments.

Chen Dong and Chen Zhongrui have installed the latest test device for plant cultivation technology in the Wentian laboratory module, kicking off a new round of plant cultivation in space.

Meanwhile, Wang conducted cellular biology experiments in the Tianhe core module, investigating the effects of long-term spaceflight on human physical functions and addressing other health issues concerning the general population on Earth. Research in space medicine continues to explore critical issues like bone metabolism.

Additionally, the taikonauts continued research with the onboard intelligent flying robot "Xiaohang" to explore efficient human-robot collaboration. The crew also made progress in the field of microgravity physical science, including assembling and disassembling various experimental modules.

Space gym, special tools to combat challenges of microgravity

Among the cargo brought by the Tianzhou-9 spacecraft is the core muscle exercise device, which has been installed in the Wentian module.

Standing 1.7 meters tall, 1 meter wide, and weighing 130 kilograms, the device is engineered to combat muscle atrophy and cardiovascular decline during extended space missions. It uses gas resistance to mimic Earth-like conditions for exercises such as crunches, twists, and push-ups.

Prior to the device, the space station had already been equipped with other exercise machines, such as the space treadmill, space bicycle and space rowing machine, all of which serve to prevent muscle atrophy and bone loss caused by the microgravity environment.

In addition to the larger fitness equipment, smaller devices such as resistance bands, hand grips and respiratory muscle trainers are also available.

To further support their physical well-being, researchers have developed specialized devices for taikonauts' bone and muscle training while in orbit.

Additional equipment includes bionic adhesion shoes that stimulate the lower limbs through alternating leg raises, helping prevent muscle and bone degeneration. A bone loss prevention device delivers high-frequency, low-amplitude force loads to support bone health, while a neuromuscular stimulator helps prevent muscle atrophy and promotes relaxation.