（蚕丝被）Ancient Oriental methods of the Sericulture, the solution to the cold _Lizi.mp4
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.