1. When choosing a number, pay attention to the hot-cold transition state of the number, and consider which numbers will become hot or hot, and which numbers will start to get cold. The commonly used method is to pursue heat instead of cold, and the hot number can be selected, and the cold number can sometimes be boldly given up.

2. For the lottery numbers of the last issue, we should consider whether there may be duplicate numbers, and if there are, we should consider them. In addition, it is also necessary to analyze whether there are related factors between each number and the previous number, such as adjacent number, next number, jump number, interval number and so on. Using these related indicators, the range of number selection can be narrowed.

3. From the interval distribution pattern of the winning numbers in each issue, we can see the hot and cold situation and trend of the numbers. More importantly, we can find out its issuing period, find out its movement characteristics and judge whether it will be issued by analyzing the winning number interval.

Two-color ball start time:

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. "More big prizes, more small prizes", double-zone number selection, the characteristics of a blue ball attracted people's attention.