1. Sericulture and silk craftsmanship of China

3. The origin of silk

4. the existing technology of China's silk maybe appeared in 5500 years ago the existing technology of China's silk maybe appeared in 5500 years ago The earliest known silk fabrics （织物） is about 4,700 years ago. The earliest known silk fabrics （织物） is about 4,700 years ago.

5. the most artificial （人工的） silkworm can be traced back in the third century BC the most artificial （人工的） silkworm can be traced back in the third century BC Zhou Dynasty had set up a special sericulture （养蚕的） management organizations. Zhou Dynasty had set up a special sericulture （养蚕的） management organizations.

6. Life cycle of the silkworm （蚕） the silkworm to grow from an egg of moth （蛾） to a silkworm larva （幼虫） larva is making its effort to produce silk thread （纤维， 丝）. larva completes its work and form cocoon （茧） larva is growing up to moth, flying out of cocoon and reproduce again

7. Production of silk cloth cocoons will be boiled in water prepare for unwinding （松 开，伸直） can get silk form cocoon making thread by twisting （搓） producing silk cloth dye （染色） the silk

8. Features Comfortable: Comfortable: silk is compose of protein fiber （纤维） silk is compose of protein fiber （纤维） Silk not only has good heat dispersion( 散热性 ), but also excellent thermal properties （保暖性） Silk not only has good heat dispersion( 散热性 ), but also excellent thermal properties （保暖性）

9. Sound-absorbing, dust-absorbing, heat-resistant （耐热性 ） Sound-absorbing, dust-absorbing, heat-resistant （耐热性 ） UV protection ( 抗紫外线 ) UV protection ( 抗紫外线 ) the tryptophan( 色氨酸 ) and tyrosine （酪氨 酸） of silk protein can absorb ultraviolet light( 紫外线 ) the tryptophan( 色氨酸 ) and tyrosine （酪氨 酸） of silk protein can absorb ultraviolet light( 紫外线 )

10. Reflection The powerful symbol of east Asian civilization The powerful symbol of east Asian civilization the important luxury( 奢侈的 ) goods the important luxury( 奢侈的 ) goods

11. a kind of effective political tool a kind of effective political tool

12. The reasons for silk industries ’ recession( 衰退 )

13. No.1 Supply exceeding demand( 供大于求 ) is aggravating( 加剧 ) in the international market loss of macroeconomic control( 宏观失控 ) of the silk industries

14. No.2 The technique The technique of silk had no breakthroughs since 90s. As consumers always like the new things, the old technique and style must cause the decrease of the volume of sales

15. How to protect ？ How to protect ？

16. We should fulfill our promise which was declaring in the UNESCO. For one thing, rely on the programs which were making to protect sericulture and craftsmanship, and adopt policies and acts[ 法规 ] actively. increase the investment funds to help it ’ s inheritors carrying on several types of activities.

17. For another, beef up public awareness of regarding the protection of Chinese heritage, join together to protect this program

18. though the advantages of the silk,we can maintain[ 维护 ] our rights though the international authentication[ 国际认证 ]. though the advantages of the silk,we can maintain[ 维护 ] our rights though the international authentication[ 国际认证 ]. as a type of Chinese style, we can make it live in the present--- develop the level of silk and protect and manage it in a scientific way. And ask WTO for help if necessary. as a type of Chinese style, we can make it live in the present--- develop the level of silk and protect and manage it in a scientific way. And ask WTO for help if necessary.

19. Only can we regard those intangible culture heritages as our treasures. Can make we folks enjoy these treasures forever. Only can we regard those intangible culture heritages as our treasures. Can make we folks enjoy these treasures forever.

20. Special chapter -------- The silk road -------- The silk road

21. The silk road The silk road goes back to Western Han dynasty. The silk road goes back to Western Han dynasty. Zhang Qian

22. land silk road land silk road Marine silk road

23. The influence of The silk road The silk road has a great significance in the history of world. The silk road has a great significance in the history of world. one of the great creation of human civilization one of the great creation of human civilization a friendship road a friendship road an important channel of communication until now an important channel of communication until now

25. Thank you ~ ！