I'll give an example here of how Chinese characters reflect speech more than they reflect meaning-as-such. Many more examples are possible. How you might write the conversation
"Does he know how to speak Mandarin?
"No, he doesn't."
他會說普通話嗎?
他不會。
in Modern Standard Chinese characters contrasts with how you would write
"Does he know how to speak Cantonese?
"No, he doesn't."
佢識唔識講廣東話?
佢唔識。
in the Chinese characters used to write Cantonese. As will readily appear even to readers who don't know Chinese characters, many more words than "Mandarin" and "Cantonese" differ between those sentences in Chinese characters.
[1] http://www.amazon.com/Chinese-Language-Fantasy-John-DeFranci...
[2] http://www.amazon.com/Visible-Speech-Asian-Interactions-Comp...
[3] http://www.amazon.com/Ideogram-Chinese-Characters-Disembodie...