China went into the World Badminton Championships in Paris with head coach Li Yongbo wary they would be hard pushed to retain four of the five titles they won in 2009 and three might have to be enough. On Sunday, those fears were swept away as his team marched off with all five for the first time since 1987. The whitewash of the rest of the world sent a clear message ahead of China's next big set-piece, the Asian Games on home territory in Guangzhou in November. Li's negative comments had been prompted by the defeat of the women's squad by South Korea in the Uber Cup and concern that men's doubles pair Cai Yun and Fu Haifeng had not played together for months because they represent different clubs. But it was Cai and Fu who delivered the fifth and final title at a full Pierre de Coubertin stadium, coming from behind to beat top-seeded Malaysians Koo Kien Keat and Tan Boon Heong 18-21 21-18 21-14.But the rest of the world will know that China's dominance is as formidable as ever, noting also that the clean-sweep was achieved without Olympic champion Lin Dan, who made a shock exit in the quarterfinals. His departure proved the cue for Chen Jin to emerge from Lin's shadow and make his own statement, beating ex-champion Taufik Hidayat of Indonesia in straight sets. At 24, Chen's best years are ahead of him and on Sunday he looked every inch a champion. Underlining China's overall supremacy, the finals of the three other title matches were all-Chinese affairs. Final results: Men: Singles: Chen Jin (4), China, def. Taufik Hidayat (5), Indonesia, 21-13, 21-15. Doubles: Cai Yun and Fu Haifeng (5), China, def. Koo Kien Keat and Tan Boon Heong (1), Malaysia, 18-21, 21-18, 21-14. Women: Singles: Lin Wang (7), China, def. Wang Xin (3), China, 21-11, 19-21, 21-13. Doubles: Du Jing and Yu Yang (2), China, def. Ma Jin and Wang Xiaoli (1), China, 21-9, 21-17. Mixed doubles: Zheng Bo and Ma Jin (8), China, def. He Hanbin and Yu Yang (6), China, 21-14, 21