Women's world number one Tai Tzu-ying survived a first round scare on home soil at the Badminton World Federation Chinese Taipei Open.
The Taiwanese top seed had to come from behind to progress at the Taipei Arena as main draw action began today.
She eventually ousted Vũ Thị Trang of Vietnam 17-21, 21-15, 21-7 to book her place in round two.
Tai, who won the Asian Games title last month in Jakarta, will now play her compatriot Chiang Ying-li in the second round.
Second seed Michelle Li of Canada was not so lucky as her challenge was ended by home qualifer Liang Ting-yu.
The 2014 Commonwealth Games champion was beaten 21-19, 21-14.
Third seed Line Kjærsfeldt of Denmark knocked out Hong Kong qualifier Cheung Ying Mei 21-14, 21-10 to also progress.
In the men's draw, Chinese Taipei's top seed Chou Tien-chen, who is searching for a third straight title, provided the host nation with more cheer.
Chou, who won the Korea Open last week, thrashed Hong Kong's Hu Yun 21-17, 21-9 in his first round clash.
It was a bad day for seeded players, however, as five of the eight were knocked out including the second, third and fourth ranked players.
Second seed Wang Tzu-wei, another Taiwanese player, lost 21-17, 21-17 to Japan's Riichi Takeshita.
Malaysia's Liew Daren, the third seed, was knocked out 21-19, 21-18 by Chinese Taipei qualifier Chen Chi-ting.
Fourth seed Hsu Jen-hao, another Chinese Taipei entrant, exited as he was beaten 21-18, 22-20 by Malaysia's Lee Zii Jia.
The Super 300 World Tour tournament will continue tomorrow.