I. Library
If the children downstairs are too noisy, we can choose not to study at home and go to the local or school library for self-study. In the library, no one dares to make a scene, so they can feel more at ease when reviewing. Moreover, the library has a good learning atmosphere, which will promote your study to some extent, and sometimes you will be distracted at home. I used to go to the library when the house was too noisy. Go to the library three times a week until the end of the college entrance examination.
Second, earplugs.
We can also buy a pair of earplugs online and wear them when you are studying, so that you can't hear the outside world at all and study hard. Some people may feel uncomfortable wearing earplugs, that is, you didn't buy the right earplugs, and some earplugs don't feel uncomfortable wearing them, and they can perfectly blend with the human body.
Third, property.
If the child is really noisy, you can report it to the property in your community, because the noise of the child will not only affect your study, but also affect the normal rest of the whole community. Of course, it is ok for children to play normally, and you don't need to explain this problem to the property.
Generally speaking, the process of learning is a very painful thing, but we still have to work hard, don't give up learning when we encounter some troubles, and stick to it until the last moment. I hope my answer is helpful to you!