C39 I Am Convinced

Three days later, the account books were all there, but Rushing Thunder couldn't understand them all. Gou Hanshi and Windy were also sitting to the side.

Yi Yeyu took a sip of tea and then slowly said, "This is Wyatt's bookkeeping method. The list goes from left to right from one year to December. The top left is the income and expenditure and the bottom left is the sum of the figures