I Became a National Treasure Expert During the Live Broadcast of Treasure Appraisal?

Parallel world, antique street. "Boss, do you want to sell this broken thermos flask?" "Whoever buys... Oh, no... Whoever doesn't sell is a fool!" "Boss, the bottom is round, so it's hard to wrap. Just stuff it with something." "Would you like a broken brick here?" "Yes!" … Expert: Is this a national treasure? Netizen: Acted? Colleague: How can a young person become an expert?