On the label or bottle cap.

According to the query on China Wine Network, the production date of Corona beer can be viewed on the label or bottle cap. Specifically, there is usually a row of numbers 1-12 on the label, which represent the date, and 1-3 numbers on the lower edge of the label represent the month. For example, the code "B9" indicates that the beer was produced in February 2019. In addition, there is usually a production date in the form of a combination of letters and numbers on the back of the bottle cap, where the letters represent the month of production and the numbers represent the year of production. For example, the code "A9" represents beer produced in January 2019.

Corona beer is a beer brand from Mexico produced by Modelo Beer Company. It is a typical American pale lager beer and is usually listed as one of the three major domestically imported liquors along with Hoegaarden White and 1664.