The Doha Star Challenge continues to unfold with upsets, as the top three seeded players have all been eliminated. The Chinese national table tennis second team has dealt a crushing blow to the Japanese mainstays. The women's singles quarter-finals have been completed in the Doha Star Challenge. All eight spots were taken by players from China, Japan, and South Korea, which aligns with the current power structure in women's world table tennis, where these three countries are particularly prominent. Despite only sending their second team, China has shown significant strength, with all five participants advancing to the quarter-finals, despite facing the main players from Japan and South Korea. In contrast, Japan, which sent many of its main players, including almost its entire main lineup, suffered heavy losses, with only two out of seven players making it to the quarter-finals, while another spot was claimed by South Korea's Shin Yu-bin. Japan sent its full main lineup to compete in this event. In the competition, the top three seeded players were all Japanese, namely the number one seed Hina Hayata, the number two seed Miyuu Kihara, and the number three seed Satsuki Todo. However, only Hina Hayata made it to the round of 16, while Miyuu Kihara and Satsuki Todo suffered defeats in the first round, with most of Japan's main players being eliminated by Chinese players. In addition to the three seeded players mentioned earlier, Japan's main player Miu Hirano was quickly defeated 0:3 by Shih Xunyao yesterday. Today, Hina Hayata lost 2:3 to China's young player Chen Yi. Yesterday, Kuai…