1. Buy and download two-color ball software for quick query.

2. Collect the historical lottery data of two-color ball by yourself, and sort out the query with excel.

3. Go to the relevant website to find the historical lottery data of the two-color ball and compare them one by one.

Two-color ball is a game of China Welfare Lottery.

China welfare lottery "two-color ball" is a kind of "lottery-type" welfare lottery which is uniformly organized and distributed by China Welfare Lottery Distribution Management Center and sold nationwide. Since February 16, 2003, it has been sold on the national network. The computer network system is used for distribution and sales, and TV lottery is held regularly. The provincial welfare lottery distribution center participating in the sales of "two-color ball" is responsible for the specific organization and management of the sales activities of "two-color ball" in this area under the direct leadership of Zhongfucai Center.