The China–Pakistan Axis Asia’s New Geopolitics

[Dayuhan]

Apart from Chinese strategic interest, to include contain India through the 'string or pearls; including a port in Ceylon, the Chinese ongoing interest and assistance is important to keep Pakistan in line with Chinese interest; more so, when the US is losing its preoccupation with Pakistan after quitting Afghanistan.

By keeping Pakistan afloat (its economy is in the pits), China will have a hold over Pakistan over the Uighurs making a serious damage to China's sovereignty, since a large majority of the Uighur Hajjis vanish into Pakistan to create havoc in Xinjiang.

That may be the intention, but it's likely to prove a complicated effort in reality. Pakistan has limited control over its own frontier areas, and the assumption that keeping Pakistan's economy afloat would yield concessions on control of unruly elements has not always worked out for other countries.

Would the number of trucks and railway cars be an impediment to a country flush with funds and on the go?

Absolutely. Again, geography is a harsh mistress. Take out a map, locate China's major industrial regions, locate it's major export markets. Like it or not, they are tied to the sea.