Chinese President Xi Jinping formally unveiled the ambitious 3,000 km-long China-Pakistan Economic Corridor (CPEC) during his historic maiden state visit to Islamabad.
The strategic corridor - regarded as the biggest connectivity project between the two countries after Karakoram highway built in 1979 - will shorten the route for China's energy imports from the Middle East by about 12,000 kms.
The CPEC will link China's underdeveloped far-western region to Pakistan's Gwadar deep-sea port on the Arabian Sea via PoK through a massive and complex network of roads, railways, business zones, energy schemes and pipelines.
Pakistan and China signed a total of 51 agreements after Xi held talks with Prime Minister Nawaz Sharif. Both the leaders witnessed the agreements signing ceremony.
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Sharif welcomed Xi and referred to China as an "all- weather friend".
"There have been critical changes in China and Pakistan, and major regional and international development, but our ties have remained robust," he said.
Pakistan hopes the investment - the initial focus of which is on electricity - will end its chronic energy crisis and transform the country into a regional economic hub by stabilising its cash-strapped economy, that had forced it to seek loans from the World Bank and the IMF in the past.