Wang Chuqin and Sun Yingsha combined for three gold medals to help China sweep four out of five at the World Table Tennis Championships which ended here on Sunday.
Wang won his first world championship singles title and Sun had her second, adding to their third straight mixed doubles event they had taken on Saturday.
Wang Manyu and Kuai Man were crowned in the women's doubles, half an hour after Wang had forced the best out of Sun in a seven-set women's singles thriller.
Japan's Hiroto Shinozuka and Shunsuke Togami claimed the men's doubles title with a 3-2 victory over Chinese Taipei's Kao Cheng-Jui and Lin Yun-Ju.
The Doha worlds marks the first time since 1975 that China has failed to reach the semifinals of the men's doubles event.
Brazil's Hugo Calderano, who made history by becoming the first South American finalist at the World Championships on Saturday, had his momentum halted by Wang Chuqin, who recovered from a mid-game lapse of mind to beat the World Cup champion 12-10, 11-3, 4-11, 11-2, 11-7 over 46 minutes.
"I saw myself as a challenger to Calderano, who is a new World Cup champion and has been in top form, especially after a great game yesterday," said Wang. "But I had a strong will to fight and was very hungry for victory."
The world No. 1 Sun defeated second-ranked Wang Manyu 4-3 to retain her women's singles title.
Roared on by a lively crowd, Sun prevailed over the 2021 world champion in a thrilling final, winning 11-8, 12-10, 8-11, 5-11, 12-10, 11-13, 11-7 in 88 minutes.
Wang saved three match points, including an edge ball that went in her favor, and went on to win the sixth set and led 3-0 in the deciding set, before Sun took four straight points from 7-7.
"My faith wavered at one point, but I just hung in there and fought to the last point," said Sun.
"Manyu and I have been playing against each other since we were children. Our games are always very close."
Chinese table tennis chief Wang Liqin said he was satisfied with the team.
"Three finals pitted players from other associations against us and we won them all," said Wang. "That means a lot."
