CROSS-STRAIT exchanges will be jeopardised unless Beijing adopts a more flexible attitude in future negotiations between the two sides, a senior Taiwan official said yesterday. ''Unless the Chinese communists change their present intransigent attitude, I am not too optimistic about future talks between the two sides,'' said Yeh Chin-fong, vice-chairman of the Cabinet-level Mainland Affairs Council (MAC). Speaking to a visiting Hong Kong media delegation yesterday, she reiterated that Taipei would not ''barter away'' her principles in negotiations with Beijing. She blamed the lack of progress on Beijing's ''ossified mentality'' and inability to recognise the political reality in Taiwan. Taipei would not accept an agreement with Beijing unless it considered the deal was ''mutually respectable'' and able to produce an ''effective and long and lasting'' solution, she added. Moreover, the agreement must reflect Taiwan's legal jurisdiction. ''We are not asking them to recognise our legal jurisdiction. What we are trying to do is to find some mutually-acceptable language that reflects this concept that we can use in the agreement,'' she said. She maintained the discussions with Beijing were meant to solve ''some practical problems'' between the two sides - not issues such as the national reunification. Mrs Yeh also played down the significance of a remark by Economic Minister Chiang Pin-kung that Taipei would push for direct sea links with the mainland. She said Mr Chiang's remarks reflected the ''opinion of one ministry'', but not the position of the Government. Nevertheless, she said, Taipei would continue talks with Beijing, and Taiwan would send Chiao Jen-ho, head of the Straits Exchange Foundation to Beijing next month to meet his mainland counterpart, Tang Shubei. ''We hope that the Chiao-Tang meeting may help us to bridge our differences on some of the practical problems by elevating the discussion to a higher-level,'' she said. Cheng An-kuo, MAC's Hong Kong and Macau Affairs Department director, said although such talks might not yield many practical results, Taipei still hoped that an active dialogue could help reduce tension between the two sides. He said his department had begun drafting regulations to govern Taiwan's relations with Hong Kong and Macau after their sovereignty change-over. According to Mr Cheng, Taipei is prepared to treat Hong Kong and Macau as ''special areas'' after the sovereignty transfer and therefore ''exempted'' from Taiwan's National Unification Blueprint. Such exemption is necessary as Taiwan bans direct links with the mainland.