Yahoo "attacks" in China

When we have a Baidu IPO with a wonderful performance (Baidu priced at $27, opened at $66 and ended its first day at $122) , today Yahoo confirms the interest in 33% of Alibabas the biggest retailer online in China. Why yahoo wants to buy in China ? To have a higher importance in the "Internal" biggest market in the world(Yahoo is the third search engine in China after Google and Baidu)...

Lets see what will hapen in the future (if yahoo will buy the rest of Alibaba) and what will be the performance of Yahoo today.