With the picking up of the account books one by one, Ning Qingshan's breath sharpened unconsciously. It seemed she couldn't stay calm and maintain her perfect smile any longer. The maid picked up the first account book and shook the dust off. Both the top and the bottom cover were clean. Then she picked up the second one and shook off the dust as well, and there was no stain on it either.

How could all of them be clean? Now four of the five account books had been found clean, ...