Xian flipped Kum Ae An with a yuko and a penalty koka.
After giving birth to her daughter 18 months ago, the 33-year-old Chinese judo veteran gave three ippon games in the women's light-weight competition, which added the fifth gold medal to China at the Games.
Soraya Haddad from Algeria oustered Sholpan Kaliyeva from Kazakhstan with a waza-ari to grab a bronze medal.
Japan's 19-year-old Nakamura, gave a koka loss to Kum Ae An at semifinal, made a struggling way to the final after a gold-score game and later ipponed South Korean Kyung Ok Kim for another bronze medal of the star-studded Japanese judo squad.
After a bye in her first bout, Xian had a perfect start in which she ipponed Spanish Ana Carrascosa by directly pushing the opponent to the mat with just 1 minute and 19 seconds, sharing her symbolic smile with 5,000 cheering spectators in the gymnasium.
Meeting world champion silver medalist Telma Monteiro of Portugal in the next, Xian conceded an early yuko but rallied to tie waves of attacks. Leading another koka advantage with 45 seconds left in the five-minute bout, she shoulder threw the Portuguese to the mat with a decision of waza-ari by the referee who soon rectified to gesture an ippon victory.
At the semifinal, Xian jumped on Soraya Haddad, world bronze medalist in 2005, and again shoulder threw the opponent to win another ippon.
(Xinhua News Agency August 10, 2008)