China's top 10 scientific breakthroughs in 2021

China's space station core module Tianhe entered pre-set orbit in April, marking a solid step in building the country's first space station. 

Besides, the country's Shenzhou XII and Shenzhou XIII manned spacecraft docked with the Tianhe core module in June and October, respectively, with the latter being the longest crewed spaceflight by China.

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