I observed Long March 5B rocket body = CZ-5B R/B (2021-035B or NORAD 48275) on May 5, 2021 (18:38 UT) and on May 6, 2021 (18:18 UT) from my small homeland. On the first night it fast passed high in the sky with periodic bright flares (up to 0m), but cloudiness slightly interfered with the observation. On the second night, it looked less bright due to the lower altitude above the horizon, but regular flares were clearly visible.

Canon EOS 60D, 30 sec. exposures.