Chinese astronaut Chen Dong waves as staff carry him away from return capsule of the Shenzhou-14 manned spaceship after it touched down safely at the Dongfeng landing site, Inner Mongolia, China, on Sunday. Photo by Li Gang/EPA-EFE/XINHUA Dec. 4 (UPI) — A crew of three Chinese astronauts returned to Earth on Sunday after carrying out "basic construction" on the country's new space station. The astronauts — Chen Dong, Liu Yang, and Cai Xuzhe — safely exited the Shenzhou 14 spacecraft after completing a 182-day mission to the Tiangong space station, according to the national broadcaster China Central Television. Advertisement The…