Li Xiaoxia continued China's table tennis dominance by winning Olympic gold with a 4-1 victory over compatriot Ding Ning in the women's singles final.
Li won 11-8 14-12 8-11 11-6 11-4 at ExCeL to see off world champion Ding.
China have won every women's table tennis singles gold medal since the game was introduced as an Olympic disclipline at the 1988 Seoul Games.
of Singapore beat
of Japan, ranked eighth in the world, 11-9 11-6 11-5 for bronze.
China have two representatives in men's quarter-finals, with
Zhang beat Hong Kong's Jiang Tianyi 4-1 and will play Dimitrij Ovtcharov in the semi-finals, after the German beat Denmark's Michael Maze 4-3.
Wang progressed to the last four with a comfortable 4-0 win over Japan's Seiya Kishikawa. He will next face Chinese Taipei's Chuang Chih-Yuan, who defeated Romania's Adrian Crisan 4-0.