On December 15, Beijing time, the schedule of the 4th match day of the 2021 Badminton World Championships was announced. On Match 4, The International will play 6 matches, including 1 singles and 5 doubles matches. Wang Zhiyi, Li Wenmei / Zheng Yu, etc., will usher in the debut of this World Championship.

Wang Zhiyi will play in The First Match of Venue 1, and her opponent is Li Yifeng. Wang Zhiyi is currently ranked 17th in the world, Li Yifeng is ranked 23rd, from the ranking point of view, the difference between the two is not much, this game is a fierce battle for Wang Zhiyi.
In the second match of venue 2, Liu Xuanxuan and Xia Yuting will make their debuts, and the two will face the combination of Pompapa/Ski. The two sides ranked 20th and 21st in the world respectively, and had a one-time encounter at the 2019 New Zealand Open, when Liu Xuanxuan/Xia Yuting won three rounds of fierce battles.
No. 10 seeds Li Wenmei/Zheng Yu will play in Game 3 of Venue 1, and the two opponents are the Amsad sisters, and the two sides have never played each other before. Li Wenmei/Zheng Yu is ranked 15th in the world, and the Amsad sisters are ranked 44th in the world.
In The 6th match of The 3rd venue, He Jiting and Tan Qiang will play in the men's doubles match, and the two will face Herminin/Stauerwood. He Jiting / Tan Qiang are the 16th seed of this tournament, and their opponents are ranked 44th in the world.
Guo Xinwa and Zhang Shuxian will attack the mixed doubles round of 16, and the opponent of the two is the 12th seed Christiansen/Boy. With the IELTS combination and Ou Xuanyi/Feng Xueying out, Guo Xinwa/Zhang Shuxian became the only hope for mixed doubles.
In the men's doubles competition, the pairing of Ou Xuanyi and Zhang Nan will usher in a challenge, and the opponent of the two is Xie Dingfeng/Su Weiyi, the No. 4 seed of the tournament. Ou Xuanyi/ Zhang Nan is ranked 27th in the world, and the opponent is ranked 7th in the world, and a fierce battle is inevitable.