What does the traffic blind box 1GB free collar mean?

The traffic blind box 1gb free collection refers to entering the business hall website to draw a lottery for 1gb traffic, and then you can get 1GB traffic. For example, China Mobile's blind box refers to the monthly blind box dismantling activity organized by China Mobile, and you can get free traffic or random phone coupons of 1GB. Users can enjoy the lucky draw as long as they log in to China Mobile account. There is a high probability of getting 1GB traffic or phone bill in the lucky draw. After winning the prize, you need to manually redeem it in China Mobile Software.