Silkproductionhasalongandcolourfulhistoryunknowntomostp...
問題詳情:Silkproductionhasalongandcolourfulhistoryunknowntomostpeople.ScientificdiscoverieshaveshownthatsilkproductionexistedinChinafromaround2500B.C.,althoughitcouldbemucholder.Forhundredsofyears,Chin...