Li Yu asked Auntie He to boil a few pots of water and add cold water to it. She poured some rapeseed juice and grass ash lye into the warm water and placed the wool in to soak.
After the oil was soaked, Li Qing and Ji Xiang rubbed the wool clean and refilled it with the juice of the grass and ash lye. They removed the impurities and oil again and washed it in warm water. Then, they took it to the stream and washed it again.
They worked for a few days before washing out dozens of bags of wool and spreading them out to dry in the sun pads.
Li Qing looked at the wool that was as white as cotton after being washed. He took some and smelled it. "Yes! Not bad. It doesn't smell like sheep after being washed."
Auntie He looked at the white wool and nodded with a smile. "We've spent so much effort. How can it not be clean?!"
Uncle Zhou nodded and said, "That's right! After spending so much effort, how can it not be good?!"
