According to CNSA, the Tianzhou-2 cargo spacecraft autonomously undocked from the rear port of the Tianhe Core Module on 18 September 2021, at 02:25 UTC (10:25 China Standard Time), and successfully docked to the forward port about four hours later. The Long March-7 Y4 launch vehicle and the Tianzhou-3 cargo spacecraft are considered ready for launch. Credit: China Media Group(CMG)/China Central Television (CCTV)