He beat Chou the world No 9, 10-21, 21-14, 21-9.

Earlier, a leg injury had cast doubts on whether Chong Wei, 34, would be taking part in his fourth All-England.

He had won the All-England in 2010, 2011 and 2014.

On Friday, he had defeated world No 6 Tian Houwei of China 21-12, 21-15.

The world No 1 will next meet China’s Lin Dan or world No 10 Shi Yuqi for the title.

Meanwhile,  the mixed doubles pair of Chan Peng Soon/Goh Liu Ying also qualified for the final in Birmingham tomorrow.

The duo swept aside Yuta Watanabe/Arisa Higashino from Japan, 21-17, 21-15 in straight sets at the Barclays Arena, Saturday.

They are set to face Lu Kai/Huang Yaqiong of China, who beat England’s Chris Adcock/Gabrielle Adcock 19-21, 21-12, 22-20.

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