Buying double the double color ball means doubling the investment.

Buyers can place multiple bets on their selected betting numbers, with the bet multiple ranging from 2 to 99 times.

The maximum betting amount for a single lottery ticket shall not exceed 20,000 yuan.

Double-color balls are sold on a regular basis, with three issues sold every week. The issue numbers are defined by the draw date and are arranged according to the calendar year.

If the bet is unsuccessful due to sales terminal failure, communication line failure, betting station credit limit and other reasons, the purchaser's bet amount shall be refunded.

Other provisions of Shuangseqiu.

The adjustment fund includes the withdrawal portion of 2% of total sales, overdue tickets that have not been refunded, and the balance of floating bonuses rounded to the nearest dollar.

The adjustment fund is used to cover the risk of unforeseen bonus payouts and to establish special awards.

After each lottery is drawn, the Welfare Lottery Center and provincial welfare lottery agencies should announce the lottery numbers, total sales for the current period, winning status of each prize level and the balance of the prize pool to the public, and notify the sales outlets of the lottery results.