In his hometown, machines are used to process the powder; freshly dug wet sweet potatoes are immediately crushed.
But here, how could he have such conditions?
He could only pound the bitter sweet potato stems in a stone mortar and then grind them with a stone pestle.
Afternoon and evening were spent grinding hard.
'Cat Urine' saw how tired he was from grinding, and came over to help.
He made three stone mortars, and 'Cat Urine' was grinding in another one.
The next day continued similarly.
By evening, they acquired thirty pounds of bitter sweet potato powder.
After thinking for half a day, he realized he lacked a large basin.
Anyway, the wet starch can't be dried in a large vat.
He guessed that these thirty pounds of bitter sweet potato powder, after filtering, would only yield two to three pounds of starch.
So, the size of the washbasin from his hometown would suffice.
He decided to make a large basin himself.
