The Pearl Spring Chess Tournament (simplified Chinese: 中国（南京）国际象棋超级大赛; traditional Chinese: 中國（南京）國際象棋超級大賽; pinyin: Zhōngguó（Nánjīng）guójì xiàngqí chāojí dà sài) was a double round robin chess tournament event featuring six super-GM players that took place in Nanjing, Jiangsu, China.
According to ChessVibes website, Silvio Danailov - the manager and coach of Topalov - said the Pearl Spring tournament has been "guaranteed for five years and will enter in Grand Slam [in 2009].
"[1][2] The second and third tournaments in 2009 and 2010 were both won by Magnus Carlsen, with his first win being rated as one of the best performances in chess history.
[4] The tournament was named after the venue, the Mingfa Pearl Spring Hotel located in Pukou District of Nanjing.
The tournament was sponsored by Jiangsu Kanion Pharmaceutical Co., Ltd., Yangzi Evening News, and Mundell International University of Entrepreneurship.