Generally, this kind of activity is definitely true. This is also a promotional activity of the merchant. The merchant cannot lose its reputation because of this. It’s just that the big prize is very rare. There is indeed such a "half-pack prize" award setting. This kind of reward is the most common. It has two ways to redeem the prize. You can collect two lottery tickets to exchange for a whole pack of prizes, or you can pay half the price to exchange for a whole pack of prizes.