I know that Chinese (in all its dialects, whether Mandarin, Cantonese, etc.) is very difficult for native English-speakers to learn particularly because the tonal system makes a word have different meanings.

For instance, the word "tianming" means both "sunrise" and "Mandate of Heaven", but it's pronounced in different tones to differentiate the two meanings.

How do tone-deaf people in China learn their native language?

I'm confused... I've heard there are tens of thousands of characters in the Chinese language. I've heard that an educated person in Chinese needs to learn around 6000 characters? How is a person supposed to remember over 6000 letters and then use them in words. That sounds crazy! I'm a little confused on how the language is structured. In English there are 26 letters and different combinations make different words, but I've heard in Chinese one character can mean a whole word. Also how is Japanese structured? Is it the same as Chinese or is it different.

first, I'm in beijing, and the computer I'm using is in chinese language, and all the writing on the computer , the brand etc.. is chinese. How do I change the language to english, and how do I restore the sound card ?

I've already found a solution to input Chinese language, but how do I change the language of the entire operating system into Chinese? That is, the Start Button, names of folders, etc.

They say that kanji is used with that Chinese language and the Japanese language they can understand Each other by Kanji
How can they under stand Each other while having a
Different Language ?