You can check the number of 20 13 two-color ball issues in the following way: 1. Two-color ball official inquiry: Enter China Sports Official (lottery.gov.cn), click the "Two-color ball" menu, select "Historical Data", select the year as 20 13, and inquire about 20 13. 2. Inquire at the sales organization: You can go to the local sales organization and provide the sales staff with the year and issue quantity you need to inquire, and the sales staff will help you inquire about the quantity. 3. Inquire in TV, newspapers and other media: The number of two-color ball 20 13 will be published in most TV, newspapers and other media, and the number can be inquired through these media. 4. Inquire on Internet platforms such as forums and social media: On Internet platforms such as forums and social media for enthusiasts, you can also inquire about the number of the two-color ball 20 13.