chapter 30 I said it's fake

Upon hearing Nevada publicly declare that the Painting of Ink Wash Shrimps in the display case was fake, the store clerk's expression immediately changed.
Initially, he had only looked down on Nevada. But upon hearing Nevada's words, it turned into a warning.
"Sir, please watch your words. If you continue to spread rumors and slander, we will report it to the police."
The male store clerk with a tie warned Nevada sternly.
"I have my reasons for saying this painting is fake."
Nevada...