GUANGZHOU (China) (AFP) South Korean superstar Park Tae-Hwan launched his bid for Asian Games glory Sunday, setting up a showdown with Chinese rival Zhang Lin as he looks to smash the China-Japan stranglehold. China won four of the six gold medals on offer on the opening night of action in the pool Saturday at Guangzhous Aoti Aquatics Centre with Japan taking the other two and both nations again looked powerful in qualifying. Park, who won seven medals at the 2006 Asian Games including three gold qualified for the finals of the mens 200m freestyle in third place behind Chinese pair Sun Yang, who touched in 1:47.85, and Zhang. The South Korean took 400m freestyle gold ahead of Zhang, the 800m freestyle world champion, at the 2008 Beijing Olympics. I think the final will be a good race to watch, said Park. Zhang Lin and Sun Yang are wonderful swimmers and are in good form. Japans four-time Olympic gold medallist Kosuke Kitajima reached the final of the mens 50m breaststroke, qualifying in fifth place behind Chinas Li Xiayan, who clocked 27.85sec. Irans Mohammad Alirezaei Dizicheh and Japans Ryo Tateishi were second and third. Kitajima won the 100m and 200m breaststroke double at the 2004 Athens Olympics and repeated the feat four years later in Beijing. He also won both events at the 2002 and 2006 Asian Games. I did well for a heat and Im happy with that, said Kitajima. Its important for me to win a gold medal. Ill try my best to win more gold medals for the Japanese team and beat our biggest rival, the Chinese team. Chinas Li said he would fight hard, adding: Even though my competitors are very strong, Im not afraid of them. Japans Takuro Fujii qualified fastest in the mens 100m butterfly heats in a time of 52.85sec, 0.18sec quicker than Chinas Zhou Jiawei, with South Koreas Chang Gyucheol third. The Japanese team performed well yesterday and Im encouraged by that. I performed well today and Ill try my best in the final to win another gold for the Japanese team, said Fujii. In the womens 400m individual medley, 14-year-old Chinese swimmer Ye Shiwen qualified quickest in 4:44.09 ahead of Japans Izumi Kato and Chinas Li Xuanxu. Japans Shiho Sakai was fastest in the womens 200m backstroke, ahead of Chinese pair Zhou Yanxin and Zhao Jing, who is the reigning world champion in the 50m backstroke. The finals, including the womens 4x100m freestyle relay, will be held later Sunday. China and Japan finished with 16 gold medals apiece in swimming events at the Doha Asian Games in 2006 with South Korea a distant third in the medals table.