DISSIDENT economist Qian Jiaju has resettled in the mainland on ''a half-time basis''. The outspoken academic, who left China for the United States one month before the Tiananmen Square crackdown, said in Hongkong yesterday he would divide his time between the territory and Shenzhen. The 81-year-old economist said he had just returned from a two-week trip to the Special Economic Zone, where he lived before going into exile. A personal friend of the Communist Party's founders, Mr Qian was kicked out of the Chinese People's Political Consultative Conference (CPPCC) in 1991 for expressing dissenting views on Beijing's handling of the 1989 democracy movement. ''I am not in any political trouble and I did not have any worries about returning to Shenzhen,'' Mr Qian said. The economist denied speculation he might soon be making a trip to Beijing, where he had been based until the mid-1980s. ''I have no desire to go to Beijing and this has nothing to do with qualms [about political matters],'' he said. He added he had no interest in rejoining the CPPCC, hinting he would stay away from Chinese politics. Sources in Shenzhen said Mr Qian, who enjoys an excellent relationship with local officials and entrepreneurs, was given a warm welcome in the zone. Last month, he was made an honorary president of the Association for the Promotion of Culture in the Asian-Pacific Region, a research body founded by large Shenzhen companies. ''I shall go on writing articles for the Hongkong press,'' said Mr Qian, referring to the columns he began in local Chinese-language papers four years ago. The autobiography of the economist, who has permanent residence status in the US, will be published by the China Times group of Taiwan this month. Chinese sources said Beijing was willing to re-admit dissidents who were prepared to keep a low political profile. Meanwhile, more than 50 former activists of the 1989 movement have begun a conference in Princeton to discuss the possibility of returning to China. Participants included such Tiananmen Square activists as Chai Ling, Li Lu, Shen Tong and Zhang Langlang. ''There is a lively debate among us as to the conditions under which we may go back to China,'' Mr Zhang said yesterday. ''Some indicated Beijing must first overturn the verdict on the June 4 massacre, while others said it was alright for the issue to be shelved and that a dialogue should begin with the communist authorities soon.'' The dissidents, who reiterated they had no intention of toppling the Beijing administration, are due to issue a statement about their future relationship with Beijing today.