（蚕丝被）Ancient Oriental methods of the Sericulture_ the solution to the cold

China is the first country to invent silkworm rearing in the world Silk is also a symbol of ancient oriental culture. Ever since we were young we raised silkworms at home, It looks like winter is coming, use this late autumn's silkworm cocoons to make a quilt, for grandma to spend the winter in warmth.