However, she was overshadowed by her teammate Li Na who became the first Chinese to reach the quarterfinals in a grand slam event, as well as the duo of Zheng and Yan.

The retirement of her former champion partner Li Ting has made things difficult for Sun, and she has struggled to find a consistent doubles partner since 2006.

She has so far won 11 women's doubles titles plus another eight final appearances with six partners.

After testing different partners, the Chinese camp decided to allow Sun to partner with Peng Shuai, a singles specialist who ranked No 31 in the world at the end of last year.

She has set her sights on an Olympic gold medal in Beijing.

"I hope I can be happy there. If I am playing in a good mood, I will be able to give it my best, just like I did in Athens."

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