Despite an inferior head-to-head against Tai, Chen said that she has become more mature and confident, looking forward to challenging Tai in Saturday's semifinals.

Chen was joined in final four by teammate He Bingjiao, who outclassed Pusarla V. Sindhu of India 21-13, 21-16.

In men's doubles, Han Chengkai and Zhou Haodong, both aged 20, dived deeper into competition after seeing off Liao Min Chun and Su Ching Heng of Chinese Taipei 21-17, 21-18.

"We played quite positive at the start as we made full preparation," said Han. "They had done well in previous matches, so we maintained out mentality at a normal level."

The young Chinese pair will face defending champions Lee Jhe-Huei and Lee Yang of Chinese Taipei.

"They are the defending champions, with higher world rankings than us. We will fight for every point against them without too much burden," added Han.

Indonesian duo of Marcus Fernaldi Gideon and Kevin Sanjaya Sukamuljo, the world No. 1, displayed supremacy as they got past Chen Hung Ling and Wang Chi-Lin of Chinese Taipei 21-17, 21-11.

Mixed doubles witnessed different scenario from top two seeds. Top-ranked Zheng Siwei and Huang Yaqiong overcame Marcus Ellis and Lauren Smith of England 21-16, 21-19, while their teammates Wang Yilyu and Huang Dongping suffered a 16-21, 21-18, 21-15 loss to Dechapol Puavaranukroh and Sapsiree Taerattanachai of Thailand.

Another disappointing loss arrived for Japan, as the reigning Olympic champions Misaki Matsutomo and Ayaka Takahashi fell to Bulgarian sister duo of Gabriela Stoeva and Stefani Stoeva 21-8, 21-16. Japanese women's shuttlers had already lost their ace pairing Yuki Fukushima and Sayaka Hirota.

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