Put your fingers on the piano correctly. When you touch the piano, you should use your fingertips, not your fingertips.
Then put your finger on the corresponding five sounds of do, re, mi, fa and so, and then practice finger piercing and crossing.
The correct fingering of playing the piano is helpful to the progress of learning. When you start studying, you can find a professional teacher to enroll in piano courses. If you teach yourself, you can buy a book on the basic music theory of piano. The important thing is persistence. Only by persistent practice can you improve your learning speed.
Fingering is very important for learning the piano, which can help reduce the technical difficulty and make us play more logically and regularly.
However, some people don't think it is too much trouble to practice every fingering as required, and even like to "create" fingering in the process of playing, which is very undesirable for piano learners (especially beginners).