Chinese astronauts Liu Boming and Tang Hongbo successfully opened the exit door of the space station core module Tianhe at 8:11 a.m. (Beijing Time) on July 4, 2021. As of 11:02 a.m., donning new-generation homemade EMU (extravehicular mobility unit) spacesuits Feitian, meaning flying to space, astronauts Liu Boming and Tang Hongbo have successfully exiting the module from the Tianhe core module, and also completed the installation of foot limiter and extravehicular workbench on the robotic arm. Follow up, with the support of the robotic arm, they will cooperate with each other to carry out the assembly of relevant equipment outside the space station.