From my layman's point of view, all kinds of yellow rice wine, whether it is southern yellow rice wine or northern yellow rice wine, are all grain-brewed wines, and the difference between them is definitely much smaller than that between yellow rice wine and wine and beer. So from a big perspective, yellow wine is used to make medicinal wine, as long as it is yellow wine. From a small point of view, which kind of yellow wine is better for soaking medicinal liquor may be related to different medicines and cannot be generalized. For example, the Ejiao yellow wine you mentioned, I think it must be Shandong yellow wine. Because Ejiao is the best in Dong 'e, Shandong. For example, the "rose wine" you mentioned should be the place that produces the most roses, and yellow wine is the first choice. I think this is because these methods were handed down by the ancients. At that time, the transportation was inconvenient, and it was generally impossible to choose raw materials from all over the world. Most of them choose local or nearby materials according to local conditions, and the results are handed down.