Fanzheng" period, especially after Deng and his reformist allies rose to power with Deng replacing Hua Guofeng as the paramount leader in December 1978. By the time Deng took power, there was widespread support among the elite for economic reforms. As the de facto leader, Deng's policies faced opposition from party conservatives but were extremely successful in increasing the country's wealth. 1979–1984 In 1979, Deng Xiaoping emphasized the goal of "Four Modernizations" and further proposed the idea of "xiaokang", or "moderately prosperous society". The achievements of Lee Kuan Yew to create an economic success in Singapore had a profound effect on the Communist leadership in China. Leaders in China made a major effort, especially under Deng Xiaoping, to emulate his policies of economic growth, entrepreneurship, and subtle suppression of dissent. Over the years, more than 22,000 Chinese officials were sent to Singapore to study its methods. Deng's first reforms began in agriculture, a sector long mismanaged by the Chinese Communist Party. By the late 1970s, food supplies and production had become so deficient that government officials were warning that China was about to repeat the "disaster of 1959", the famines which killed tens of millions during the Great Leap Forward. Deng responded by decollectivizing agriculture and emphasizing the household-responsibility system, which divided the land of the People's communes into private plots. Under the new policy, peasants were able to exercise formal control of their land as long as they sold a contracted portion of their crops to the government. This move increased agricultural production by 25 percent between 1975 and 1985, setting a precedent for privatizing other parts of the economy. The bottom-up approach of the reforms promoted by Deng, in contrast to the top-down approach of the Perestroika in the Soviet Union, is considered an important factor contributing to the success of China's economic transition. Reforms were also implemented in urban industry to increase productivity. A dual-price system was introduced, in which (State-owned enterprise reform 1979) state-owned industries were allowed to sell any production above the plan quota, and commodities were sold at both plan and market prices, allowing citizens to avoid the shortages of the Maoist era. Moreover, the adoption of Industrial Responsibility System 1980s further promote the development of state-owned enterprise by allowing individuals or groups to manage the enterprise by contract. Private businesses were allowed to operate for the first time since the Communist takeover, and