Arriving in Taiwan for a 12-day visit, Chinese trade officials last night urged the island to drop its policy of discouraging trade and investment with China. Liu Zhentao , director of the economic affairs department of the State Council's Taiwan Affairs Office, told his hosts at a banquet that the policy was 'creating obstacles' to cross-strait trade. Mr Liu, the highest-ranking Taiwan Affairs official to visit the island, heads a 15-member trade delegation. Invited by Taiwan's Chinese National Federation of Industries, most delegates are officials responsible for reviewing investment applications from Taiwan-based firms. To avoid political sensitivities, the federation invited the 15 in their role as advisers to the Cross-Strait Economic Technology Co-operation Centre. Meanwhile, Wang Hui, deputy director of the Taiwan, Hong Kong and Macau affairs department at the Ministry of Foreign Trade and Economic Co-operation, promised Taiwan businessmen that Beijing would soon implement detailed measures aimed at protecting their interests in the mainland.