1. your mobile phone should be rooted.
2.download the file from the link:http://pan.baidu.com/s/1iMHx
3.Unzip the file, copy search_category to your mobile phone “/data/data/mobi.mgeek.TunnyBrowser/app_search/”.
4.reboot the dolphin browser.
Now, you can choose your search engine to baidu on your dolphin browser. Enjoy it.
If you want to know the detail about why I change the search_category, you can read the post tomorrow , I’ll write it in Chinese .