1, the half price of the second cup is twice the price of the first cup and 0.5 times the price of the second cup. If you spend 1.5 cups, you can enjoy two cups, which is equivalent to 7.5% discount. If you only buy one cup, you won't get a discount. First, the second cup will be cheaper, and buying two cups is more cost-effective than buying one, encouraging consumers to spend more;

2. "Half price for the second cup" means confession and love, which means "my other half", because only two people will be half price for the second cup. Attract couples to spend, and then slowly extend to potential couples to hint or explore whether it can be further developed. If a girl asks the opposite sex if she can buy a "second half price" drink with her, she is probably interested.