By Daniel Hunter
China's President Xi Jinping has arrived in Pakistan to unveil a $46 billion (£30.7bn) investment for a super highway between the two countries.
The investment will go towards creating the China-Pakistan Economic Corridor (CPEC), including roads, railways and pipelines.
The 3,000km (1,865 miles) network will run from Gwadar in Pakistan to China's western Xinjiang region.
"Pakistan, for China, is now of pivotal importance. This has to succeed and be seen to succeed," said Mushahid Hussain Sayed, chairman of the Pakistani parliament's defence committee, Reuters reported.
The investment is seen as China's plan to increase its economic footing in Central and East Asia. It comes as its economic growth falls to its lowest level in decades. The investment also far exceeds what the US is spending in Pakistan.