Chinese Vice-Premier Li Lanqing said yesterday that trade and investment between Taiwan and the mainland was destined to continue, and warned that 'no single person' could stand in the way. Speaking in Beijing to hundreds of delegates at a cross-strait economic and trade seminar, Mr Li did not mention any names, but appeared to be referring to Taiwan President Lee Teng-hui , who last week suggested Taiwan should diversify its overseas investments by scaling back on projects in China. 'Any person who tries to place artificial barriers to restrict economic co-operation is going against the will of the people of the two sides,' Mr Li said, adding that China had an 'unwavering policy' of welcoming Taiwanese investment. Officials in Taiwan did not immediately respond to Mr Li's statements. The seminar was attended by senior Chinese officials, including Beijing's united front chief Wang Zhaoguo , Beijing Mayor Li Qiyan and Yu Xiaosong , Vice-Minister of the State Economy and Trade Commission. The Taiwanese delegation was led by Kao Ching-yuan , vice-chairman of President Enterprises, which is among the single largest Taiwanese investors in China. Mr Kao is also a standing committee member of the Kuomintang in Taiwan.