30 May 2021
The launch Tianzhou 2 was originally set for around 1:30 BJT on 20 May. The launch was cancelled 2 hours before take-off because of an abnormal parameter in the pressure level readings. After a system functions check, the launch was scheduled for the early morning of 21 May. However, after liquid oxygen was refueled 8 hours before the scheduled launch time, abnormal signals once again occurred.
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