Olympic champion Lin Dan of China eased into the quarterfinals of the All England championships on Thursday with a comfortable 21-14, 21-13 win over unseeded compatriot Bao Chunlai. Lin faces sixth-seed Joachim Persson who earlier beat fellow Dane Jan Jorgensen 21-15, 21-18. Indonesia's Taufik Hidayat dropped the first game to home favorite Andrew Smith but recovered to win 15-21, 21-15, 21-16. Taufik now meets Peter Gade, 21-11, 21-16 winner over Hong Kong's Ng Wei. Top seed Lee Chong Wei of Malaysia advanced with a 21-18, 21-16 win over German Marc Zwiebler. In the women's singles, second seed Zhou Mi of Hong Kong suffered a 21-19, 18-21, 23-21 defeat by unseeded Wang Yihan. Top seed and world number one Tine Rasmussen of Denmark won 21-12, 21-13 over Ukraine's Larisa Griga.