Ask a basic question about Erhu

All basic skills related to "music" have an indispensable training, and that is "ear training". Especially for bowed and stringed instruments such as the erhu, due to the structural principles of the instrument itself, there are no fixed phonemes, so more attention must be paid to ear training. That is the scale practice at the introductory stage. It is best to have a fixed-tempo musical instrument such as a piano or audio for comparison. Or only with the guidance of a teacher with solid professional knowledge can you pass the "pitch" test. Only then can you hit every note accurately.