Top paddler Tie Yana is still pondering her future despite helping Hong Kong to a great start in the opening day's play of the pro tour grand finals yesterday. The 29-year-old right hander and partner Jiang Huajun thrashed wild-card entries Chong Weng-i and Ma Chao-in of Macau 4-0 in the women's doubles in less than 30 minutes at Tap Seac Pavilion. 'I don't know how long I can play at the top level,' said Tie, who once threatened to quit after losing in the team event at the Beijing Olympics this summer. 'I just take it tournament by tournament and see how far my body can go.' Tie, who once occupied the world number three spot, admitted a hectic schedule before the Olympic Games coupled with a disappointing result in Beijing, had brought her to the brink of ending her career. 'I have played for most of the tournaments in two consecutive years, physically and mentally I am exhausted,' she said. 'I will play less in the coming year and hopefully I can last until the East Asian Games.' The Hong Kong second seeds will take on Kim Kyung-ah and Park Mi-young of South Korea in the semi-finals after the Koreans had an easy 4-0 victory over Singaporeans Feng Tianwei and Yu Mengyu. 'We beat them on the tour when we last met but it was not easy,' said Tie. 'Their defensive style always makes life difficult for their opponents and you need to be very patient if you want to beat them.' In the men's doubles, Jiang Tianyi and Tang Peng suffered a major upset as they lost 4-2 to French pair Adrien Mattenet and Emmanuel Lebesson in the opening round.