90 Ancient Science and Technolog 郑和下西洋 郑 时间1405-1433年 先后7女 最大的衡鱼长4文，支18丈 401433 次行大小只有200多粒 每次27一2力人 中国ne of he four Major Inventions::Compass (made by magnetic lodestone)
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90 Ancient Science and Technolog Bamboo slips 中国概论 Papermaking
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A90 Ancient Science and Technolog Gunpowder: Firecrackers lof immortality making
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90 Ancient Science and Technolog Block Printing; Type Printing (engraved on wood) 中国概论 Printing
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90 Traditional Chinese Medicine(TCM Acupuncture 中国概论 Points
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90 Traditional Chinese Medicine(TCM 出：静： 熟1品1器德 :参写 中国概论Massage Herbal medicine
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90 Traditional Chinese Medicine(TCM Diet Breathing Exercises 中国概论
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90 Traditional Chinese Medicine(TCM Listening,smelling,inquiring and observing,and feeling the pulse
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490 Other NIV的 中国概论Abacus Porcelain
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1907 Other silk 中国杷 silkworm cocoon
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