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In page Constitution of China:

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There had been five major revisions by the National People's Congress (NPC) to the 1982 Constitution. The 1982 State Constitution provided a legal basis for the broad changes in China's social and economic institutions and significantly revised government structure. The posts of President and Vice President (which were abolished in the 1975 and 1978 constitutions) are re-established in the 1982 Constitution.[citation needed]