Why should Call of Duty mobile games send coupons to players?

It was released by official activities.

In the "Call of Duty" mobile game, a time-limited ticket counting activity was recently launched, and players can get time-limited tickets by participating in the activity and completing the task.

Time-limited coupon delivery, players need to log in for seven days to complete the task, and they can get 50 time-limited coupons every day, for a total of 350 time-limited coupons. Log in during the Spring Festival, and you can get it on New Year's Eve, the first day, the third day, the fifth day and the seventh day, and you can get a total of 640 time-limited coupons. Grab the red envelope, participate in the red envelope grab mode, you can open the red envelope, and have the opportunity to get weapons and limited coupon rewards.