On January 20th, the second major event of the Badminton World Federation in 2025, the India Open, came to an end. After the first two major events, a rare new situation has emerged in the world of badminton doubles: "second marriages" are thriving while original partnerships are cold and quiet. Let's take a look at the doubles situation in this year's first major event, the Malaysia Open: Men's Doubles: The champions were South Korea's men's doubles pair, Kim Won-ho and Seo Seung-jae. Kim Won-ho used to play mixed doubles with Jung Na-eun, winning the silver medal at the Paris Olympics; Seo Seung-jae played both men's doubles and mixed doubles, partnering with Kang Min-hyuk in men's doubles and Chae Yoo-jin in mixed doubles, winning the men's doubles and mixed doubles titles at the 2023 World Championships. This year, they are "second marriages," with a world ranking of over 180 before the tournament (qualifying based on tour rankings, as below). The new pair of Kim Won-ho/Seo Seung-jae defeated the well-known Liang Weikang/Wang Chang, Rankireddy/Sethi, and then won against Chen Boyang/Liu Yi in the final to claim the championship. They defeated all the original pairs. Women's Doubles: The champions were the Japanese pair of Fukushima Yuki and Matsumoto Mayu. Fukushima Yuki is already 32 years old, her past partner was Hirota Ayaka, but they didn't achieve much; Matsumoto Mayu is also 30 years old, her past partner was Nagahara Wakana, and they won the World Championship title. This year, they are also "second marriages," with a world ranking of around 100 at the…

On January 11th, Beijing time, the fifth match day of the 2025 Malaysia Badminton Open began, with the semi-finals of various events set to take place one after another. The first match was a women's singles semi-final where former world champion Ratchanok Intanon suffered a 0-2 defeat, being swept by world number one An Se-young, swallowing her ninth consecutive loss to An Se-young as An Se-young advanced to the women's singles final. The second match was a women's doubles semi-final where the national team pair of Li Yijing/Luo Xumin lost 0-2 to the Japanese pair of Yuki Fukushima/Mayu Matsumoto, losing this China-Japan clash, which meant that the national team's women's doubles missed out on the opportunity to win the championship in advance. The other women's doubles semi-final was an internal battle between Liu Shengshu/Tan Ning and Jia Yifan/Zhang Shuhuan. The women's singles semi-final between An Se-young and Ratchanok Intanon marked the start of the fifth match day. Both An Se-young and Ratchanok Intanon are world champions, with An Se-young also being the Paris Olympic champion and currently ranked world number one. The 22-year-old An Se-young is at the peak of her career, while the 30-year-old Ratchanok Intanon, although not in the twilight of her career, has seen a decline in competitive form compared to her peak. Previously, they had met nine times, with An Se-young losing their first encounter but then winning eight consecutive matches. After the start of the game, An Se-young quickly took a commanding lead of 9-2, with Ratchanok Intanon closing the gap slightly. An Se-young still…