In 2003, after the market preparation of 1, the two-color ball was officially put on sale on February 6, 2003. "More big prizes, more small prizes", double-zone number selection, the characteristics of a blue ball attracted people's attention. After the prize pool exceeded 100 million yuan, the introduction of the "inverted Sanqi" lottery added more charm to the two-color ball and promoted its development. In the sales of 10 month in that year, the two-color ball completed 89 lottery draws, and the cumulative sales reached 2.829 billion yuan.

On June 23rd, 2003 10, the fund of the 70th prize pool of two-color ball broke through1000000 yuan for the first time. On the same day, the lottery center revised the relevant provisions of the rules of the two-color ball game and launched the "Inverted Sanqi" lottery; Results In June of that year, 65438+February 2 1, the single prize of the second prize of two-color ball reached 3594732 yuan.