Tourists Looking to climb China’s sacred Mount Tai, in Shandong Province, can now do so with the help of a lightweight AI-powered exoskeleton that makes hiking a breeze.

Clips of elderly tourists climbing up Mount Tai, one of the five sacred mountains in China, while wearing bizarre gear around their hips have been going viral on Chinese social media, sparking all kinds of strange theories. In reality, the tourists are wearing light exoskeletons offered by the Taishan Cultural Tourism Group on a trial basis. Weighing only 1.8 kg (4lbs), these advanced exoskeletons are reportedly fitted with a series of sensors that allow them to detect and analyze every movement of the wearer’s lower limbs and provide just the right amount of assistance in a timely manner, effectively reducing the burden on the legs.