What is on the other side of the black curtain? I am guessing you already knew the answer, the article title has already told you. Plus there is a picture suggestive of what it is below.
The curtain is actually a group of large black trash bags attached together using masking tape. Behind it is a large shelf with lots of 5-gallon capacity water container. Each container contains fermented wines from three years ago. They are abandoned wine. No one dared continuing the process after the project funding got terminated. A sad story.
Are the wines still good? I do not know yet. Maybe throwing them away is the best option.