A Chinese worker stands near trucks carrying goods during the opening of a trade project in Gwadar port, some 700 kms west of the Pakistani city of Karachi on November 13, 2016.

China has deepened its economic pull over its neighbour Pakistan over the past year, providing over $1bn in loans to help the South Asian country stave off a potential currency crisis.

State-backed Chinese banks have come to the nuclear-armed state's rescue on two separate occasions, officials have told the Financial Times, with $900m coming in 2016, followed by another $300m in the first three months of this year.