China's Xie Xingfang ( 6 ), Denmark's Camilla Martin ( 7 ) and ninth-seeded Karina De Wit of the Netherlands also advanced.
In Hong Kong-Denmark play, Danish star Camilla Martin fell to Wang Chen 3-1 and Christina Sorenson was beaten 3-0 by Ling Wan Ting.
Dai Yun, who lost the 1999 world championship final to Denmark's Camilla Martin, will later face Sweden's Sara Persson in the first round.
Denmark's Camilla Martin, ranked fourth in the world, took barely 25 minutes to beat a nervous Li Li of Singapore 7-1, 7-0, 7-3.
And Denmark's Camilla Martin, ranked fourth in the world, took barely 25 minutes to beat a nervous Li Li of Singapore 7-1, 7-0, 7-3.
Camilla Martin of Denmark beat Mia Audina of Indonesia in the women's singles, moving her to the No . 4 spot in world rankings.
World No . 2 and 2000 Olympic silver medalist Camilla Martin of Denmark withdrew from the tournament because of an injury to her right heel.
His work with youngsters is well known, having guided players like Ib Fredericksen, Camilla Martin and Kenneth Jonassen since they were in their early teens.
Britain's Tracey Hallam downed former world champion and Sydney silver medalist Camilla Martin of Denmark in the second round of the Olympic women's badminton tournament Sunday.