You mean China ?
"The fact is the Pakistanis seem set to rely on Russian engines for a majority of their fleet in the coming decades. When seen along with the fact that Russia supplied IL-78 MP refuelling tankers to Pakistan between 2009 and 2012, it is clear that comfort levels on both sides have been growing for quite a while now."
Source
We can't see what's going on behind the scene, yeah China played important role parts.