Liu Boming and Tang Hongbo, two of the three Chinese astronauts, or taikonauts, stationed in the Tianhe core module of China's Tiangong space station, on Sunday ventured outside to conduct the first extravehicular activities (EVAs) of their current mission. This 60-second video shows the astonishing moment when they crawled to the operation site aided by the handrails and started to conduct their first EVAs for space station construction.