The reason why Bing is blocked in China is the same reason many other websites are blocked. Banning Bing does not stop those in China from using a search engine. The most popular search Engine in China is Baidu, by a large degree. Nevertheless, Bing, along with Yahoo and Google are still utilized, despite the block.
What does Baidu do?
Baidu Youa, an online shopping/e-commerce platform through which businesses can sell their products and services at Baidu-registered stores. Baidu Desktop Search, a free, downloadable software, which enables users to search all files saved on their computer without launching a Web browser.