Zheng Bo and Gao Ling won an all- Chinese final in the badminton mixed doubles event at the 15th Doha Asian Games in Doha on Friday.
The newly-combined Zheng and Gao overcame their teammates Xie Zhongbo and Zhang Yawen to won the opening set 21-16.
The third-seeded Xie and Zhang bounced back strongly to tie 23- 23, but lost the following two points.
Sudket Prapakamol/Saralee Thoungthongkam from Thailand and Mohd Fairuzizuan/Wong Pei Tty from Malaysia took bronze medals.
"I'm very satisfied about this gold," said Zheng, who threw away his racket and lay down on the court after the win.
"We have prepared very well in a very short time. We put a lot of effort in the preparation for the final," said Zheng Bo, a 23- year-old Asian Games debutant.
The 27-year-old Gao, who played two mixed doubles and one women 's doubles games on Thursday, said, "I don't know how I did it. It wasn't easy. Now I am a little tired."
Although Zheng and Gao only paired up three weeks before the Asian Games, they showed their power in Thursday's semifinals by knocking off Indonesian world number one Nova Widianto and Liliyana in straight sets.
In Friday's semifinals, Zheng and Gao finished off Malaysian M Tazari Mohd Fairuzizuan and Wong Pei Tty 21-11, 21-13 with powerful smashes and quick shots.
"We had set a goal to win at least three gold medals and we have already won more than three. So it's good," said Chinese head coach Li Yongbo.
China clinched both the men's and women's teams golds and has secured another in the women's doubles event.