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Whenever I heard of ．rocket・, the first thing came into my mind is the air rocket that we made during secondary schools. Nevertheless, thanks to the national hero, Yang Liwei, China・s first man in space, we get more informed of how the rockets and spacecrafts are made. This is also the reason which drives me watch this sky show, ．Legends of Manned Spaceflights・, I would like to know more about how humans made it through, from the earth to the sky. Yang: I am proud of my motherland, indeed, we should. The very first attempt to apply the concept of action-reaction pair to military purpose is by our ancestors in the Soong dynasty. It has long been known that the release of gas from a will provide a pushing force in the opposite direction.
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