The current search share of China search engines
Most China search engines use Chinese with two version:
1) simplified Chinese
2) traditional Chinese.
The Simplified Chinese is used in mainland China search engines, while the traditional Chinese is used in Hong Kong, and Taiwan search engines.
China Major Search Engines with The Market Share (Q4. 2011)
The followings are some popular search engines.
Top Two of Most Popular China Search Engines on China Internet
Other Chinese Search Engines
and more......