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Interview with chief designer of Long March-5 and Long March-5B rockets
03:22

China's space station is expected to be fully functional by the end of this year. During its construction process, the Long March-5B rocket has been playing a key role in transporting the core module and two lab modules. CGTN's Wu Lei sat down with Li Dong, chief designer of both the Long March-5 and Long March-5B rockets.

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