I received this message. What does this mean? What do you need me to hand in?

For example, public service messages remind you that the new tax policy has been implemented. You can learn more about the special additional deduction policy. There are six items: children's education, continuing education, rent, mortgage (mortgage and rent cannot be used at the same time), support for the elderly, and medical treatment for serious illness. Check your compliance. First improve your personal information on the personal income tax app, and then declare a special deduction. There are two ways to declare. One is to submit it on the app and prepare relevant materials according to the app process prompts. The second is that individuals go to the tax bureau.