1. China Welfare Lottery (Computer) (hereinafter referred to as the "Administrative Measures") is formulated according to the Interim Provisions on the Administration of Lottery Issuance and Sales and the Interim Measures for Joint Issuance. China welfare lottery "two-color ball" (hereinafter referred to as "two-color ball") is a joint lottery. Distribution and sales adopt computer network system, and TV lottery is held regularly. Article 3 "Two-color ball" is issued by China Welfare Lottery Issuance Management Center (hereinafter referred to as China Welfare Lottery Center) and sold nationwide. The welfare lottery distribution center of the provincial administrative region (hereinafter referred to as the provincial center) participates in the sales activities of the "two-color ball" and is responsible for the specific organization and management of the "two-color ball" under the direct leadership of the local area. Article 5 "Two-color ball" lottery tickets are purchased voluntarily. All buyers agree and abide by these rules.
2. "Two-color ball" lottery betting is divided into red ball number area and blue ball number area. Article 7 The betting number of each issue of "two-color ball" consists of 6 red ball numbers and 1 blue ball numbers. The number of red balls is selected from 1-33; The number of the blue ball is selected from 1- 16. Article 8 "Two-color ball" 2 yuan/Zhang. Ninth "two-color ball" adopts the national unified prize pool. Article 10 "Two-color ball" is sold three times a week. The issue number is determined by the date of drawing and arranged by calendar year. Chapter III Betting Article 11 The betting methods of "two-color ball" can be divided into optional betting and machine-selected betting; Its betting methods include single betting and double betting. Article 12 "number-selection betting" refers to the betting method in which the bettor chooses the betting number by himself. Article 13 Machine-selected number betting refers to the betting method in which betting machines randomly generate betting numbers for gamblers.
3. Article 14 Single gambling refers to the gambling method of selecting 6 numbers from the red ball number and 1 number from the blue ball number to form a single gambling number. Article 15 There are three types of multiple betting: multiple red ball numbers: 7-20 numbers are selected from red ball numbers, and 1 number is selected from blue ball numbers to form multiple betting numbers. Blue ball number duplication: select 6 numbers from the red ball number and 2- 16 numbers from the blue ball number to form a multi-gambling number. Full-duplex: Choose 7-20 numbers from the red ball number and 2- 16 numbers from the blue ball number to form a multi-gambling number.