The Communist Party leadership has ascribed the success of last week's Korean summit to President Jiang Zemin's advice to North Korean leader Kim Jong-il. Mr Jiang told Mr Kim during his recent visit to China it was possible to balance an open-door policy with authoritarian one-party rule. A Beijing source said yesterday Mr Jiang encouraged Mr Kim not only to make the best of the historic meeting with the South Korean President but to open up the economy. 'Don't be afraid of economic reform and letting foreign capital come in,' Mr Jiang reportedly told Mr Kim. He said it was possible to strike a balance between economic liberalisation and tight ideological control. The source said Mr Jiang indicated to his guest the secret of maintaining control was to 'snuff out any challenge [to the administration] when it is still at the embryonic stage'. Mr Kim, who visited Beijing late last month, had told his Chinese hosts he was afraid opening up his country would engender social instability. It is understood Mr Jiang encouraged Mr Kim to follow the example of the mainland by taking measures such as running special economic zones. Mr Kim, who first planned to tour China last year, had initially expressed a wish to visit Shenzhen, the mainland's first economic zone. During last month's trip, he apparently indicated for the first time his approval of the reform experiments of the late mainland patriarch Deng Xiaoping. A diplomatic source in Beijing said Mr Jiang took pride in his successful experience in liberalising the mainland economy while maintaining political stability and consolidating the party's rule. He said President Jiang's teachings on the subject would form an integral part of Jiang Zemin Theory, which would be unveiled next year to coincide with the publication of the Selected Works of Jiang Zemin. The source said soon after meeting Mr Kim, Mr Jiang pointed out in an internal meeting that the mainland's developmental model also would suit socialist countries such as Vietnam and Cuba. Mr Jiang's aides also indicated he had 'gone even further than Deng' in ensuring that market reforms would not jeopardise one-party rule and tight ideological control. Meanwhile, senior cadres have reiterated after the Pyongyang summit that the 'Korean model' cannot be used for relations across the Taiwan Strait. An internal circular cited a Politburo member as saying the case of the two Koreas was 'fundamentally different' than that of the mainland and Taiwan. 'Seoul and Pyongyang agree on the basic principle of reunification,' the Politburo member was quoted as saying. 'However, many [politicians] in Taiwan are opposed to reunification and the 'one China' principle. Of course, there are still ideological and political differences between the two Koreas, but it is important that leaders from both Koreas agreed on the need and urgency of union.' The Politburo member added as long as the 'struggle' between the mainland and Taiwan remained that between reunification and independence, there was no question of allowing Taiwan President Chen Shui-bian to visit Beijing. 'That would send the wrong message to Taiwan, that we [the Communist Party] will accept somebody who has not affirmed the 'one China' principle,' the senior cadre said.