Isn't It a Bit Improper at This Late Hour?

How to prove?

"If Grandfather doesn't believe it, you can conduct a thorough search of Qingqu Villa to see if Little Ci and I have hidden the missing scroll," Huo Qingqu responded after a moment of silence. His expression remained emotionless, as if he had been greatly insulted and yet was powerless to resist due to circumstances.

In other words: as long as they didn't find the "Great Scroll of the Nation" at Qingqu Villa, it would prove that the box handed to Gu Pianpian was intact?

This illogical solution seemed absurd to Gu Pianpian. She raised her head and looked at Huo Qingqu with a cold, mocking tone, asking, "So, according to big brother, I can clear my name using the same method?"

"Of course," Huo Qingqu nodded. "The 'Great Scroll of the Nation' was personally delivered by the owner of the art restoration workshop to the Huo estate. The surveillance at the estate entrance provides clear footage."