Su Yunjin really didn't believe Gu Ya had that ability.
Those two thick stacks of account books!
Without any auxiliary tools, relying solely on mental arithmetic or pen and paper calculations, Su Yunjin couldn't believe that Gu Ya had such skills!
"Yunjin, if you don't believe me, you'll know in three days whether I can finish it or not," Gu Ya didn't say much, but in three days, he would have the account books ready. By then, his little wife would see for herself and believe even if she didn't want to.
Talking about it now was less useful than just finishing the task and showing his little wife.
Gu Ya's absolute certainty and confidence somehow made Su Yunjin somewhat trust him. Could it be that Gu Ya really had the ability to finish the account books in such a short time?
Su Yunjin was half-convinced, and Gu Ya decided to start on the accounting now. "Yunjin, there is paper, a brush, and ink in the cabinet. Could you help me get those things? I will start right now."