Chinese ace Lin Dan claimed the World Superseries Finals title on Sunday, defeating his compatriot Chen Long in less than an hour, 21-12, 21-16.
The rapid victory gave "Super Dan" badminton's first-ever "Super Grand Slam", with the 28-year-old Chinese pin-up, already the sport's most decorated player, having now won all nine of its premier titles.
Lin had breezed past his long-time foe and Danish veteran Peter Gade to set up the final with Chen, who created the shock of the series after beating defending champion and world number one Lee Chong Wei in the semis.
Danish duo Mathias Boe and Carsten Mogensen denied China a clean sweep of the men's events after the defending champions trounced their Chinese opponents Chai Biao and Guo Zhendong in the doubles final, 25-23, 21-7.
In the women's final, top seed Wang Yihan of China proved too good in the end for Saina Nehwal of India, winning 18-21, 21-13, 21-13.
Chinese women's pair Wang Xiaoli and Yu Yang took just 33 minutes to beat Ha Jung Eun and Kim Min Jung of South Korea, 21-8, 21-12.
It was an all-China affair in the mixed doubles final, with Zhang Nan and Zhao Yunlei claiming an easy victory over Xu Chen and Ma Jin, 21-13, 21-15.