This kind of moon cake is generally available in some supermarkets or traditional pastry shops. If you want to buy authentic hard moon cakes, I suggest you go to the local food market or pastry shop, which usually has more choices and better quality.
In addition, if it is not convenient for you to buy in a physical store, you can also buy authentic hard moon cakes through some shopping platforms such as Taobao and JD.COM. When buying, it is recommended to pay attention to the reputation and reputation of the merchants and choose the merchants with good reputation and reputation to buy.
It should be noted that hard moon cakes are not a very common kind of moon cakes, and may not be available in all places. I suggest you know the local sales channels and moon cake varieties before buying.