IN a declaration of its loyalty to the leadership of the central authorities, Shanghai has vowed to curb regionalism and strive for common affluence across the nation. The city's Communist Party head, Huang Ju, has called on senior cadres to ''conscientiously shatter the narrow-minded regionalism'' that was created under the planned economy. ''[You should] strive to promote the 'Yangtze River Brand', 'Chinese Brand', and 'World Brand','' he said, suggesting that the coastal city should look beyond its territorial boundary in promoting economic growth. Mr Huang urged cadres to steer economic development from the premiss of seeking ''common prosperity and common affluence''. The leading echelon of the Communist Party (CCP) has underscored the significance of regions rallying behind the Government to ensure full implementation of state economic policies. Mr Huang was speaking at a conference of senior cadres in the province on the newly-released collection of works by patriarch Deng Xiaoping, seen by analysts as the new bible to bind the rank and file of the ruling party together. He said the ongoing thrust of economic reform should be based on the ''unified leadership of the party central, macro-control policy and nationwide market''. ''As the largest economic centre of the country, Shanghai as a matter of course has to speed up its own pace of economic development,'' he said, but added the national interest was of equal importance. Mr Huang indicated that the coastal city should take the lead in promoting economic growth along the Yangtze River corridor as well as the nation at large. The increasing wealth gap between the rich coastal belt and the still-impoverished interior and the state's chronic deficit has prompted the communist leadership to revamp its tax structure. A set of far-reaching tax reforms to boost the revenue of the central Government is expected to be tabled at the forthcoming plenum of the CCP Central Committee, scheduled to be opened in Beijing on Thursday. But the issue is set to trigger fierce debate between central leaders and regional heads over how much tax revenue has to go to the state coffers and how much localities could retain for their own development. According to the left-wing Wen Wei Po yesterday, the financial difficulty faced by the Government has reached crisis levels. It said the Government had to borrow from banks three times this year to pay cadres' wages. Meanwhile, China yesterday announced the cancellation of illicit fees on 75 items and published the list for social supervision. Xinhua (the New China News Agency) said the ban, ordered by the Ministry of Finance and the State Planning Commission, would be followed by others to combat corruption. The new ban cancelled fees demanded by public security departments and charged by the railways, transport and airline services. The illegal fees include charges for the application and opening of cultural and recreation centres, changes in household registration because someone had moved and fees in adopting abandoned children. The so-called consulting fees in the procedure for exit formalities were cancelled.