they're drinking tea in wine glasses? is it normal there?

Its pu erh tea, fermented tea that as expensive as wine. But they, exaggerated here for comedic reason. Usually u used traditional ceramic cup.Lol. Come on, one pack of 50 years pier tea could cost you min. Hundreds and even thousand dollar , of course the boss wanna use the best glasses he had. Lol

I was wondering too XD