German star Timo Boll beat Jang Woojin of South Korea 4-1 while local hero Dimitrij Ovtcharov struggled into last 16 with a hard-fought 4-3 victory over Romania's Hunor Szocs.

The Chinese women proved that nobody but themselves can beat them. With all the five players reaching the quarterfinals, two of the matches became all-Chinese affairs.

World No. 3 Zhu Yuling beat fifth seed Chen Meng 4-2 and second seed Liu Shiwen defeated qualifier Mu Zi 4-1.

In the other two matches, world No. 1 and defending champion Ding Ning routed Japan's sixth-ranked Ishikawa Kasumi while 17-year-old Miu Hirano trounced world No. 4 Feng Tianwei of Singapore.

Ding will meet Hirano while Zhu take on Liu in the semifinals.

Hirano became Japan's first singles medal winner in 48 years after moving into the semifinals and securing a bronze medal.

The last time Japan won a singles medal was back in 1969 when Toshiko Kowada won gold in Munich, Germany.

"I am so happy to win," the Asian champion said. "I did not know that it has been so long that Japan has won a medal, I am a bit surprised. I am happy to have this record, and that this will be in the history books."

Hirano defeated three Chinese players, including world No. 1 Ding, en route to the Asian championship in April.

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