Beijing has warned regional cadres not to use President Jiang Zemin's congress report as an excuse for unauthorised investments or privatisation. The Chinese media yesterday carried interviews by various provincial leaders pledging they would toe Beijing's line in mapping out the next stage of economic development. A Beijing source said senior cadres had personally told regional officials attending the 15th congress to be cautious in implementing reform measures including transforming enterprises into joint-stock companies. 'The new line from Beijing is local cadres must come to a full, rounded and correct understanding of the President's speech - and not make self-serving interpretations of individual sections and paragraphs,' the source said. Over the weekend, premier Li Peng and Vice-Premier Zhu Rongji told delegates not to 'kick up a whirlwind' of forming joint-stock companies or selling off state assets. The China News Service yesterday cited provincial delegates as expressing agreement with the central line. 'Being bold does not mean using brute force, and stability is more important than speed,' the agency quoted the delegates as saying. It reported Anhui party secretary Lu Rongjing as saying that cadres and citizens had become more 'sober-minded' after listening to the recent speeches of premier Li and Vice-Premier Zhu. 'In implementing reform in connection with the shareholding system, we must not engender a whirlwind or wage a Mao-style mass movement,' Mr Lu told the news service. Sichuan Governor Song Baorui said it was not wise for all small state-owned enterprises to be transformed into shareholding co-operatives. 'The reform of enterprises requires different formats,' he said. 'We must steer clear of fads.' Meanwhile, in addressing delegates from Guangdong, the party secretary of the rich province, Xie Fei, vowed to continue 'thought liberation' to better serve reform. 'There is no end to thought liberation,' the China News Service quoted Mr Xie as saying. 'Deng Xiaoping Theory is formed as a result of upholding thought liberation. 'In future we must ceaselessly change and renew our concepts through practice.' Guangdong is among several coastal provinces and cities which have been told by Beijing to be extra cautious in adopting experiments such as joint-stock companies and new ways of using foreign capital.