How should we distinguish the quality of a wine? Let's learn about the basic ways to identify wine: 1. Observe the appearance of the bottle. Each bottle of wine has its own label, and the rich information on the label can help us determine the origin, region, vintage, grade, and even taste of the wine. Is there any abnormality with the bottle cap? For an unopened bottle of wine, if the cork is protruding or there is liquid around the bottle mouth, it indicates that the quality of the wine has problems. Is there a Chinese label on the back of the bottle? All imported wines must have a Chinese back label. If there is no Chinese back label, it may be smuggled goods, and the quality cannot be guaranteed. The country of origin can be determined from the international barcode on the front label of the wine bottle, such as: 3-France, 6-China, 8-Italy, 9-Australia. Some French wines have a woman's head icon printed on the lead seal of the bottle, indicating that it is authentic original wine after paying taxes in France. There is also information at the bottom of the wine bottle. If it is imported from countries like France, the unit of measurement at the bottom of the bottle will be 75cl instead of 750ml because "ml" is not a unit of measurement in France. All wine bottles have a depression at the bottom, which is used to store sediment when the wine is stored upright. The longer a wine needs to be aged, the deeper the depression. Therefore, generally speaking, good wines need long-term storage, so the depression at the bottom of the bottle is usually deeper. However, wines with a deep depression are not necessarily good wines.