sound that you do not know how to use. when it comes to characters i also hear a lot of people argue that by writing the character by hand you have this amazing memory aid and that the character seems as if it were burned into your brain and that you can remember the words so much better this way. that is a big mistake in my opinion, because if you do that and you are learning mandarin the traditional scientific way, at this point it is not only the difficult sound of the word, the tone (or usually 2 tones) that you have to remember, but also the character/characters, 