Chen Long defeates Malaysia's Lee Chong-wei to win the gold medal in men's singles at the Badminton World Championships in Jakarta, Indonesia on August 16, 2015. (Photo/Xinhua)
History repeated itself as Chen Long beat Lee Chong-Wei again in the final Sunday to win the men's singles for the second time.
Chen won in straight sets 21-14, 21-17.
With that Chen further consolidated his world number one status.
Lee Chong-wei, however, has finished runner-up in four consecutive world championships.
Despite repeatedly missing out on the crown, 33-year-old Lee says he wants to continue until after the Rio Olympics.
In other action, top-ranked Zhang Nan/Zhao Yunlei retained their mixed doubles title, edging out Liu Cheng/Bao Yixin in an all-Chinese final.
Zhao Yunlei also claimed the women's doubles championship with her partner Tian Qing. They defeated a Danish pair in three sets.
And Indonesia's Mohammad Ahsan/Hendra Setiawan defeated China's Liu Xiaolong/Qiu Zihan to win the men's doubles event.
All Chinese competitors suffered early exits in women's singles. That event was won by defending champion Carolina Marin.