The business model of wine cellar is difficult to come up

When you have a business you don't understand/know much about, you should directly ask “what's their business model? How to they make money?” as a clarification question.

You are not being asked to guess the business model of the company. So just ask it. It's that simple! ;)

Hi Xinlu,

It is indeed but it's not uncommon for you to face unfamiliar industries!

You need to get comfortable with the “unknown”. Identify what you don't know about the industry and just ask! In other words, turn your known unknowns into known knowns.

To practice, conduct research on various industries. Setup an industry deep-dive template and go ahead and fill it out. This should get you use to understanding the varioues levels/dynamics within various industries.