If I buy a two-color ball with a price of 100 yuan per issue, how can I get a high winning rate?

Buy seven blue balls and seven red balls, and you have a 70% chance of winning. Of course, you can guarantee that your funds can be invested every period. The winning rate depends on your luck. If you are lucky, you will win the grand prize, and if you are unlucky, you can win a small prize. It depends on how you choose the red ball. If you win the first prize, it won't be as simple as the first prize, that is to say, you won the first prize of 1 and the second prize of 4 to 5. If you win, there must be at least 10 million. Good luck.