Fu Tinghan never knew how difficult people's livelihoods were, until he saw this kind of hardship.
He murmured, "If only there was cotton."
Zhao Hanzhang said, "In our time, when we mentioned cotton, we generally referred to American cotton, but during this era, they can't completely lack cotton either."
Fu Tinghan looked at her.
Zhao Hanzhang said, "It's kapok, found in the south. Currently, some people in the south use kapok wool to fill bedding and clothing, and others use it to weave clothes. But it hasn't reached large-scale production, and hasn't spread to the north."
"There's no time," Zhao Hanzhang laid her hands behind her head, gazing at the twinkling stars in the sky, "It takes a long time back and forth, and purchasing also requires time. We can only think of other ways."
Fu Tinghan said, "If we can stay indoors, then charcoal can be a way to keep warm, along with kàng?"