First of all, the copyright of your published article belongs to you. If you don't sign the above agreement, the magazine will have some obstacles in using your articles in the future, so the magazine uses your eagerness to publish to let you transfer some rights to him.

I suggest you read this agreement carefully and discuss the terms of the right transfer with the magazine. At present, magazines will use your articles in the next few years and within the scope to protect your rights to the maximum extent.