Malaysia's world number-one Lee Chong Wei brushed aside Jun Takemura of Japan 21-10, 21-11 to reach the semi-finals of the Japan Open badminton tournament in Tokyo Friday.
The 30-year-old top seed, going for a record fourth Japan Open men's singles title, needed a little more than 30 minutes to book a semi-final clash with Nguyen Tien Minh on Saturday.
The fifth-seeded Vietnamese whipped Japan's Kento Momota 21-18, 21-13 in another quarter-final.
China's Gao Huan struggled in beating Indian H.S. Prannoy 21-11, 20-22, 21-13 to set up the other semi-final clash with Japan's seventh seeded Kenichi Tago.
Tago crushed India's K. Srikanth 21-18, 21-9.
In the women's quarter-finals of the $200,000 tournament, the eighth leg of the 12-round World Superseries, fourth-seeded Wang Yihan breezed past fellow Chinese and fifth-seed Wang Shixian 21-17, 21-15.