What's the use of the two blessing brushes?

In the third daily activity on your to-do list, there is a task called "God bless the people in heaven".

The activity point is to Dali, and there are blessed officials in the left rear of the week; If there is no sworn brother, no mentoring relationship, no husband and wife relationship, you can only participate in activities. The way to participate is that players with any of these three relationships team up and put balloons in the place where the blessing officer wishes. You use the brush on the balloon to bless, and you will gain some experience every time you bless. Balloons will explode when they get 66 blessings, and then gift boxes will be scattered everywhere. Grab a few and have fun, and there will be a grand prize. . Ha ha. If you have one of these three relationships, you can team up and fly balloons together, and the experience will be more rewarding.