Don't be afraid of difficulties, so you will never learn anything. Violin is difficult, that's just a layman's matter. Once you pick up the piano, nothing is difficult.

As for the cost, it is enough for beginners to buy a 400- 1500 piano. One class a week, each class is 50- 100 yuan.

The price of erhu is very close to that of violin. Now erhu is becoming more and more popular, and it is easy to find a teacher.

If you want to find a teacher, you can go to a musical instrument store, an art training center and a children's palace.

Put aside all your troubles and choose a subject that interests you. Ask not how long it will take you to learn well, but how long you can persist. Come on!