On December 12, 2021, the Badminton World Championships continued to be held in Spain, the first round of 16 seats were born, China's famous Han Yue eliminated Vietnam's Ruan Cuiling, due to her second round opponent Ma Lin withdrew, Han Yue won without a fight and directly advanced, Ma Lin is a three-time World Championships women's singles champion, won the Olympic women's singles gold medal, but now she is affected by injuries and has been in the recovery stage.
Han Yue is 22 years old, is the coaching team to focus on the cultivation of young players, has participated in many competitions, experience is very rich, the Chinese team women's singles sent four players to participate in the competition, Olympic champion Chen Yufei was absent, He Bingjiao led the game, Han Yue played against Vietnamese player Ruan Cuiling in the first round, the opponent has a certain strength, Han Yue played steadily, won two consecutive sets of 21-16, 21-14, and eliminated Ruan Cuiling 2-0 to advance.
Next, Han Yue's opponent is the host famous Ma Lin, but Ma Lin withdrew from the competition due to injury, and the BWF did not arrange other players to replace, so Han Yue won without a fight and directly advanced to the round of 16, becoming the first player to reach the quarterfinals of this World Championship.
Men's singles three people registered to participate, Chen Long, Shi Yuqi was absent, Lu Guangzu led, the world championship five events, the Chinese team had the smallest number of men's singles, Lu Guangzu first round against Thailand's famous Quinravut, the latter won Shi Yuqi, three consecutive World Youth Championships to win the men's singles championship, is a very powerful rival, Lu Guangzu performed strongly, to 21-16, 21-12 consecutive wins two sets, 2-0 victory over Kunlavut.
Li Shifeng had a prominent performance in the Thomas Cup, expected by outside fans, the first round against the United States player Lin Enkai, Li Shifeng to 21-6, 21-10 quick final, 2-0 elimination of Lin Enkai, and then Lu Guangzu against Chinese Taipei star Zhou Tiancheng, the two had three encounters, Zhou Tiancheng won, Li Shifeng challenged India's brother Slickanter, the opponent once ranked first in the men's singles world.
Mixed doubles Ou Xuanyi / Feng Xueying eliminated the Danish combination Noel / Maglund 23-21, 21-14, followed by the Russian combination Ofimov / Davletova, the defending champion Zheng Siwei / Huang Yaqiong bye, the Olympic champion Wang Yilu / Huang Dongping temporarily withdrew from the competition, this year's World Championship, should be the smallest number of top masters in history, it is likely to give birth to a new champion.
Japan ended two singles matches, Watanabe Kenki swept Nigeria's Opeiuri 21-11, 21-1, Watanabe Hangki 20-0 lead to take the initiative to handicap, refused to keep a clean sheet, Ohhori Cai first round out, Scotland's Gilmour promoted 21-19, 21-17, the last champion Momota Kendou was affected by injury and withdrew from the game, also absent women's singles player Okuhara Hope.