TAIPEI - China's world No. 1 Chen Long underlined his class with a superb fightback to clinch the men's singles crown at the Taiwan Open badminton championships on Sunday.

The reigning world champion dropped the first game against local favoutie and world No. 8 Chou Tien Chen but recovered to steamroll his opponent 15-21, 21-9, 21-6 at the Taipei Arena.

It was Chen Long's fourth title of the season, having earlier won the All England, Malaysian Open and Australian Open.

The 26-year-old now goes to next month's Aug 10-16 World Championships in Jakarta brimming with confidence.

China also bagged the women's singles title after world No. 8 Wang Yihan thrashed compatriot and fourth ranked Li Xuerui 21-10, 21-9 in the final.

Fifth seeds Fu Haifeng-Zhang Nan collected China's third crown by overpowering Indonesian youngsters Gideon Markus Fernaldi-Kevin Sanjaya Sukamuljo 21-13, 21-8 in the men's doubles final.

In the women's doubles final, Asian Games champions Nitya Krishinda Maheshwari-Greysia Polii of Indonesia prevented a fourth title for China by beating twins Luo Ying-Luo Yu 21-17, 21-17.

South Korea's Ko Sung-hyun-Kim Ha-na took the mixed doubles crown by beating compatriots Shin Baek-cheol-Chae Yoo-jung 21-16, 21-18.