BEIJING, July 25 (Xinhua) -- Beijing Games host China will send their biggest-ever Olympic team of 639 athletes to compete on home soil next month.

The 1099-strong delegation also include 460 officials for the Games to be opened on Aug. 8, according to deputy chef de Mission Duan Shijie here on Friday.

Men's 110 meters hurdling Olympic champion Liu Xiang, NBA star Yao Ming and diving queen Guo Jingjing will spearhead the biggest squad in Beijing to compete in all 28 sports.

Chinese players and coaches of the newly-founded Chinese Olympic delegation clench their fists as they recite a pledge to 'play with honour' in Beijing, July 25, 2008. China unveils its largest delegation for any previous Olympic Games on Friday to represent the host nation.

Shooter Tan Zongliang, 37, is one of the three athletets making their fourth Olympic trip. The other two are basketballer Li Nan and Guo, two time Olympic champion on women's springboard.

Thirty-seven athletes of the team will enjoy their third Games while 165 have been to Athens.

"I'm getting better with good training and no injury. All I have to do in the Olympic track is to beat myself," said Liu, who became the national hero by winning Chinese men's first-ever athletics Olympic gold medal in 2004.

In a ceremony held at the announcement of the delegation, all the present members pledged, facing the Chinese national flag, that they will complete clean and fair, respecting opponents, judges and spectators.

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