More important to boosting the GDP of a developing country are roads (transportation), electricity/ energy, clean water, sanitation and good agriculture. Infrastructure is examined as a catalyst for developing Africa (13 pages) Also, building economic growth from education is described here.
China's overall GDP increased by about 100 times in real terms from 1952 to 2009. China's per capita income increased by about 30 times.
There are far more impactful things that can be done for developing economies.
Deng’s economic reforms started in rural China. By 1983 they had resulted in the complete de-collectivization of agriculture and in annual income growth of more than 10 percent for most farmers, who then accounted for the bulk of the total population. The new system for agriculture, the “Household Responsibility System,” allowed individual farm families (on plots leased from the local village committee) to sell on the free market whatever they could produce in excess of their plan quota sold at the official government price. It was an extremely successful incentive-based system. Until the mid-1980s, rural incomes grew much faster than urban incomes. The reverse happened most years thereafter, and by 2010 average per capita urban incomes were more than 2.8 times as high as average per capita rural incomes, perhaps a world record.
The share of agricultural employment in China today is about one-third, roughly the same as in Japan in 1960 and South Korea in 1970. The migration of agricultural surplus labor to higher-productivity jobs will continue for at least another decade, supporting high economic growth for the country as a whole.
Here is a high level review of China's GDP from 1952 to 2009
1958-59 So-called "Great Leap Forward" devastated agriculture: result was falling GDP in 1960-62.