On December 19, Beijing time, the 2021 World Badminton Championships entered the final day of competition. In the women's singles final, Japan's Akane Yamaguchi defeated Chinese Taipei's Dai Ziying in two straight sets to win the single world championship title for the first time in her career. After the game, japanese fans praised Akane Yamaguchi while also thanking Chinese Olympic champion Chen Yufei.
It turned out that Akane Yamaguchi was the less favored side before this final. On the one hand, Dai Ziying has not competed since the Tokyo Olympics, while Akane Yamaguchi is almost full-time and has even worse physical reserves. On the other hand, the two sides have met a total of 17 times before, Dai Ziying has a 10-7 loss, and Yamaguchi Akane has also lost more than a few wins in the two recent years. In the face of unfavorable circumstances, Some Japanese badminton experts pointed out the reasons behind Yamaguchi Akano's 2-0 take-away match. According to reports, the Japanese coaching team referred to the ball in which Chen Yufei defeated Dai Ziying at the Tokyo Olympic Games before the game, and developed targeted tactics for Akane Yamaguchi.
Compared with these two games, Akane Yamaguchi's tactics are similar to Chen Yufei's, that is, when passive, he always pulls the ball up and does not let Dai Ziying play the offensive coherence that he is good at. And Akane Yamaguchi and Chen Yufei are both very good at defending players, and relentlessly defending the ball can eventually allow Dai Ziying to make various unforced mistakes. It is for this reason that Japanese fans expressed their gratitude to Chen Yufei, and the following excerpts of the commentary translation: "Chen Yufei showed the world how to win Dai Ziying players", "I didn't expect to win so easily, the tactics formulated by referring to Chinese players are too successful", "In the face of Dai Ziying players with excellent physical fitness but poor patience, as long as they can shoot more every time, they may have unexpected gains, which is what the Tokyo Olympic final told the world."