On December 15, Beijing time, the 2021 Badminton World Championships entered the fourth match day. In a matchup in the women's doubles arena, the 10th seeded Li Wenmei/Zheng Yu competed against the Amsad sisters of Thailand. Li Wenmei/ Zheng Yu is ranked 15th in the world, and their opponents are ranked 44th in the world.
In the first set, Li Wenmei/Zheng Yu came up to take a 6-2 lead, and the two entered a technical gap 11-6. After the suspension, Li Wenmei/Zheng Yu quickly opened the gap, and Li Wenmei/Zheng Yu scored 6 consecutive points in a 15-9 situation to win the first set 21-9.
In the second set, the Amsad sisters began with a lead, and after 3-5, Li Wenmei/Zheng Yu scored six consecutive points to surpass the opponent by 4 points at 9-5. In the middle of the game, the Amsad sisters trailed 13-14 and trailed by only one point, while Li Wenmei/Zheng Yulian scored six points and won the match point 20-13. The opponent defused the first match point, and Li Wenmei / Zheng Yu won the second set 21-14.
In the end, after two rounds of competition, the No. 10 seeds Li Wenmei / Zheng Yu defeated the Amsad sisters 21-9, 21-14 and successfully reached the women's doubles round of the World Championships.