... long fibre is costful and exclusive,has been deeply favored to the people. Regarding the bookmakingof Chinese traditional medicine recordation : ... . Tussah silk from northern China, wild living, people like to eat the pupa inner cocoon,tussah silk fibre thicker, good elasticity ... than mulberry silk. Mulberry silk feeding by human at home,eat mulberry leaves, over 4000 years improving, quality good, pure ...