If you want to maintain the flute, just remember to wipe it clean (be sure to dry it) after each use. Don't leave fingerprints, and don't crush the keys when you put them. Others are generally not needed.

For beginners, my suggestion is to learn obturator

One is that you don't need a vacancy at your current level.

Furthermore, if holes are used, the sealing coefficient should be considered when pressing the keys (if there is air leakage, the sound will be inaccurate). It's also troublesome to have holes (for example, you can't wear gloves if you have holes, and it's hard to practice when your hands are cold in winter and sweaty in summer)

In addition, many people with holes now have plugs.

Besides, perforated flutes are also very expensive. For beginners, it is better to buy a good closed flute than an ordinary open flute.

Some people say that people with holes can easily blow out sounds, but in fact, you can't even blow out sounds. What else can you learn?