Wang Jing, from Fujian province, wins the 100-meters on Thursday at the National Games. [Xinhua]

A female runner competing in China's National Games has tested positive for a banned substance, in the third doping scandal to stain the Oct. 16-28 competition.

Wang Jing, winner of the women's 100m race on Thursday, was kicked out of the competition and her results were stripped off, awarding Jiangsu province representative Jiang Lan, silver medalist in the women's 100m, the gold.

It is the third doping case at the Games after Guo Linna, a rower from Henan Province and Li Jie, a shooter from Inner Mongolia were found to haven taken banned substances earlier at the Games.

Elsewhere in athletics, Li Yanxi of Hebei broke the oldest Chinese track field national record as he rewrote the men's 28-year-old triple jump record with 17.59 meters on Monday.

The 25-year-old Li, the 2006 Asian Games champion in Doha, also broke the Asian record of 17.35 set by Kazakhstan's Oleg Sakirkin in 1994.

The national mark of 17.34 was set by legendary Zou Zhenxian at the 3rd Athletics World Cup in Rome in 1981.

In Monday's program, Peng Shuai took central stage of the competition by winning her third gold at Games after partnering Xu Yifan to claim the women's doubles title.

The team from Tianjin were hardly tested by Sichuan's Grand Slam winners Zheng Jie/Yan Zi to secure the gold at 6-4, 6-1.

The title came as the icing on the cake as Peng has inspired the team of Tianjin for the women's team title and secured the mixed doubles gold on Sunday.

The 23-year-old is also in the run for a record four golds at the prestigious meet by reaching the final at the singles event, where Peng will take on Zhejiang's Han Xinyun on Tuesday.

"I haven't thought too much about the singles event," said Peng, "I'm very happy at the moment, and meanwhile very tired. I just want to take a good rest and fight tomorrow.

"Either lose or win, I will be happy, since I have already harvested three gold medals."

In road cycling, veteran cyclist Wong Kam-po sprinted in the end of a 201-kilometer route and brought Hong Kong the first gold medal at the national meet.

It is also Wong's third gold medal in the road cycling event in four National Games.