Chen Qingchen (left) and Jia Yifan of China compete during the third round of the women's doubles at the BWF World Championships against Treesa Jolly and Gayatri Gopichand Pullela of India on Aug 24, 2023. (PHOTO / XINHUA)

COPENHAGEN - China's Chen Qingchen/Jia Yifan and Zheng Siwei/Huang Yaqiong claimed straight-game victories to secure their places in the quarterfinals of the women's and mixed doubles respectively at the BWF World Championships here on Thursday.

Playing the first match on Court 1 of the day, Chen and Jia defeated India's young shuttlers Treesa Jolly/Gayatri Gopichand Pullela 21-14, 21-9 to progress.

"We were well-prepared for this match. The opponents were strong and had their own distinctive style. Whenever we talked about them, we didn't need to mention names. Once we mentioned the Indian pair, we knew whom we were talking about. So before the match, we considered trying to give some pressure to avoid being overpowered," said Chen.

READ MORE: China's shuttlers secure two final berths at Japan Open

This is the sixth World Championships for Chen and Jia as a pair. They have won three titles - in 2017, 2021, and 2022, and are only one title shy of becoming the most decorated women's doubles pair at the worlds.

Their worst result at the World Championships so far is a quarterfinal finish.

"After this match, we have already achieved a result that will not be worse than our worst performance in the past. Now, all we need to do is to move forward," said Chen.

Another Chinese pair Zhang Shuxian and Zheng Yu defeated Dutch duo Kirsten de Wit and Alyssa Tirtosentono with a score of 21-13, 21-10

Her partner Jia added that they need to adjust their mindset and be prepared to face the challenges in the coming matches.

Another Chinese pair Zhang Shuxian and Zheng Yu defeated Dutch duo Kirsten de Wit and Alyssa Tirtosentono with a score of 21-13, 21-10.

READ MORE: Chinese shuttlers see mixed results as Japan Open starts

In the mixed doubles, three-time world champions Zheng and Huang sailed to a 21-14, 21-9 victory over Indonesian pair Dejan Ferdinansyah and Gloria Emanuelle Widjaja.

China's Zheng Si Wei (left) and China's Huang Ya Qiong compete in their 2nd round mixed double match against Dejan Ferdinansyah and Gloria Emanuelle Widjaja of Indonesia at the BWF World Championship in Copenhagen, Aug 24, 2023. (PHOTO / AP)

 "The opponents played well in the first game, but at that time, we firmly executed our tactics, and the result turned out to be great," said Zheng.

 "As the match went on, my feeling of attacking was getting better and better. In the beginning, it wasn't so smooth, but as the match progressed, I felt more relaxed with a better sense of space."

READ MORE: Chinese shuttlers win two doubles titles at S. Korea Open

China's Jiang Zhenbang and Wei Yaxin also secured a place in the mixed doubles quarterfinals by defeating the Malaysian pair Goh Soon Huat and Lai Shevon Jemie 21-16, 21-18, while third-seeded Feng Yanzhe and Huang Dongping were knocked out by home favorites Mathias Christiansen and Alexandra Boje 21-15, 21-18.