Hulusi is actually the simplest wind instrument. Generally, four or five months and half a year is almost the same. I can play at home for half an hour every day. My cucurbit lesson is Monday, so I can practice at home. After half a year, you will be guaranteed to pass the 10 level. You can buy ordinary cucurbit silk, about 200~300, not too expensive. Mine is 280 in C and 240 in B. If you still don't understand anything, please ask me!