I think if you want to be authentic, all Changyu wines sold in Yantai are authentic. Of course, the most authentic one is to go to Castel Winery, where the prices of the wines vary, and it also teaches you how to taste them. I recommend you to buy them there, and they will be cheaper than other supermarkets, because there are no links such as sales. Hehe, I just went to Castel Winery once, which is very beautiful. Welcome to go.