Fuman Building ran a tavern.
What they never lacked was wine. When Su Yunjin came to sell two jars of wine, Manager Liu felt that Su Yunjin was joking. The wine at Fuman Building was supplied by designated people, and they generally wouldn't accept wine from other sources. Moreover, Fuman Building required a large quantity of wine.
The two jars Su Yunjin brought were basically useless.
"Madam, if you have come to Fuman Building to sell wine, then I'm sorry, but our Fuman Building normally does not accept wine brought by others." Before Su Yunjin could speak, Manager Liu politely refused her. The way Manager Liu spoke to Su Yunjin was actually already giving her quite a bit of face. If it had been someone else, Manager Liu wouldn't even bother with an extra word. He would have directly instructed the staff to dismiss her, as Su Yunjin had come to Fuman Building to sell things a few times before.