Malaysia's world number one Lee Chong Wei crushed fifth-seeded Nguyen Tien Minh of Vietnam to reach the Japan Open Badminton final today.The top seed and defending champion whipped the world bronze medallist 21-10, 21-5 in 29 minutes in their semi-final at the Tokyo Metropolitan Gymnasium.Lee will play the seventh seed and hometown favourite Kenichi Tago on Sunday, hoping to lift a record fourth Japan Open title.Tago beat China's Gao Huan 21-12, 21-12 in the other semi-final.