Yahoo Monday launched its own Web site for Internet searches in China. The site, called "Yisou," means "No. 1 search" in English.The move comes less than a week after rival Google Inc. announced it had partnered with venture-capital firm Draper Fisher Jurvetson ePlanet Ventures (DFJ ePlanet) to take a strategic stake in Chinese search engine operator Baidu.com. The site claims to be one of the most popular Internet search engines in China with an index of Chinese-language Web sites totalling more than 300 million pages.Though a Yahoo spokeswoman confirmed the launch of the Yahoo site, further details were not immediately available.The new site is part of Yahoo's continuing efforts to tap into the large Chinese market. Last year the Sunnyvale, Calif., Internet company paid $120 million for 3721 Network Software, a Hong Kong company that develops software and systems intended to make using the Internet easier for Chinese-language speakers. In January, Yahoo launched an auction-based e-commerce service with Chinese portal operator Sina.