Yazhou, Yàzhōu [zh] = Asia [en]
Yazhou is a Chinese word meaning Asia.
The yazhou.cn is a top level Chinese domain that denotes a continent of Asia, one of the most commonly used toponyms in the world (wikipedia).
Baidu reports that more than 100.000.000 Chinese web pages use the term Yazhou, which is the maximum number it can display for any search term.