The powerful Chinese table tennis national team played down the home advantage and expects the toughest ever Olympic Games.　 It's the first time that table tennis introduces team events in the Olympic history, and China have fielded an unprecedented squad including both the men's and women's world 1-2 in the rankings.　 Wang Hao, who claimed the first ever world champion in his career last year in the men's World Cup, leads the men's team also including three-time world champion Wang Liqin and quartet World Cup holder Ma Lin, the current second-ranked man in the world.　 In the women's part, defending champion and world No. 1 Zhang Yining will cooperate with teenage reigning world champion Guo Yue and veteran Wang Nan with 18 world titles in hands.