To say Zhao Xuan understands authentication is a joke. He doesn't even understand the jargon and runs to other people's stalls saying they're selling fakes. What kind of person does that,When it comes to counterfeit goods, people usually don't say it too directly. They use euphemisms like "not sure if it's genuine" and so on, and passersby understand. Nobody would point at something and bluntly declare it fake.,"Old Wu, how did you have time to come over today"。