1. At the beginning of your study, you'd better consult a professional teacher, and don't build a car behind closed doors, so as to avoid detours and leave many bad problems. Once these problems become habits, it is difficult to correct them later.
2. When practicing the piano at ordinary times, the whole body should be relaxed, and the arms and fingers should not be in a state of tension.
3. Usually pay attention to learning music theory, often practice solfeggio and ear training, cultivate intonation awareness, and accurately sing the score before each song practice.
4. Cultivate imitation. Usually, when we listen to others playing a erhu song, we always think of the auditory impression that a famous musician once pulled to judge whether his performance is good or not. If the answer is yes, it means that he is imitative, otherwise it proves that he is imitative. So be sure to listen to others (especially the famous erhu players) more, so as to get a good impression of pitch and rhythm in your brain.