BEIJING has moved to implement its new Tibetan policy of aid coupled with iron-fisted control with remarkable swiftness. Politburo member Li Tieying was in Lhasa in the past week to personally enforce the carrot-and-stick policy, which was approved at a national conference on Tibet held in Beijing late last month. Mr Li, who is also Minister for Restructuring the Economy, is the most senior cadre to visit the autonomous region in two years. Official media reported yesterday that 40 of the 62 infrastructure projects initiated at the Tibetan conference were in ''full swing''. Xinhua (the New China News Agency) quoted officials saying that preparations for another 22 projects were progressing smoothly. Tibetan analysts said Mr Li's visit was significant because of his long involvement with Tibetan work. His father, former United Front chief Li Weihan, played a key role in Beijing's talks with the Dalai Lama in the 1950s. The official media reported yesterday that Mr Li decided ''on the spot'' to grant six million yuan (HK$5.3 million) to install anti-fire and anti-burglary systems in Lhasa's three major monasteries. ''Li Tieying held discussions with religious personalities in the three monasteries and got an understanding of the need to protect the facilities and also about the living conditions of the lamas,'' the China News Service reported. Sources in Lhasa said a number of temples in Tibet had been hit by burglaries, and Mr Li's largesse was seen as boosting the popularity of the Government. The sources said, however, that some of the burglaries in the smaller monasteries had occurred because of Beijing's policy of reducing the number of resident lamas. They said Mr Li and other officials had given instructions on further combating pro-independence activists. For example, local police and People's Armed Police had stepped up surveillance over Tibetans who had connections with their brethren in India and Nepal. Some public security officials have reportedly started a new campaign to promote atheism. Tibetan sources said senior officials had addressed the grievances raised by some Tibetans that the projects promised by Beijing would lead to an influx of Han Chinese engineers and entrepreneurs. The officials have privately pledged to reduce the friction between locals and the new batch of Han settlers. The sources said Mr Li's trip could pave the way for the visit of a more senior party cadre. In its report on the Tibetan aid projects, Xinhua claimed that ''they were unprecedented in scale'' and comprehensive in distribution. Western Tibet experts have expressed surprise at the speed with which the projects, which were only announced last month, had been carried out.