CHINA'S newly-elevated head of state, Mr Jiang Zemin, has called for emancipation of mind and creative thinking in the process of socialist modernisation, which is still at its ''initial stage''. Mr Jiang, the ''core'' of the new leadership, delivered the upbeat speech yesterday before the closure of the 17-day National People's Congress. Championing the Deng Xiaoping line, Mr Jiang called on all government organs and cadres to learn the Deng thought so they could set a good example and be good public servants. Mr Jiang also called on China's people to unite under the banner of patriotism and socialism. ''China's socialist modernisation is still at its early stage with enormous difficulties. The realisation of a grand task needs to be backed and supported by a great pioneering spirit,'' he said. Echoing paramount leader Mr Deng, Mr Jiang called on the country to grasp the opportunity to quicken the pace of economic development. The next five years, he said, was a crucial period for China. The state president said that by successfully completing tasks set at this congress session, China would be able to take major steps forward in the construction of a socialist market economy. ''We will then be able to reach the goal of quadrupling the 1980 gross national product ahead of schedule,'' he said. Mr Jiang and Mr Qiao Shi, the new congress chairman, praised their predecessors Mr Yang Shangkun and Mr Wan Li. In his address, Mr Qiao vowed to develop a set of laws governing the market economy during his five-year stint. ''The development of a market economy system is the only way for China to speed up its economic development,'' he said. But the establishment and improvement of such an economic system must have legal guarantees, the congress head said. Quoting what Mr Deng said 15 years ago, Mr Qiao stressed he would strive to promote democracy and a system of law. ''Democracy should be institutionalised and enshrined in laws so the legal system and laws will not change with a change of leaders or changes in their view points and attention,'' he added. Yesterday's closing session began with the passing of a resolution on the government work report, with 2,838 in favour, 20 against and 19 abstentions. The resolution said the conclusion of the government's past five years' work was practical and the tasks in the next half decade was achievable. Also approved with an overwhelming majority were reports on the budget, the long-term development strategy, and the Macau Basic Law. A work report compiled by the Supreme People's Procuratorate, tabled by retired president Mr Liu Fuzhi, was passed with 2,257 in favour, 375 against, and 234 abstentions. The report by the Supreme People's Court, tabled by president Mr Ren Jianxin, received 2,563 votes in favour, with 162 opposed, and 135 abstaining.