China has successfully launched the 30th and 31st Beidou navigation satellites

At 1:56 on March 30, 2018, China successfully launched the thirty-first and thirty-first Beidou navigation satellites from the Xichang Satellite Launch Center with a Long March-3B carrier rocket (and the upper stage of the Expedition 1). The two satellites belong to the medium Earth orbit satellites, which are the seventh and eighth networking satellites of China's Beidou No. 3.