I don’t understand what point of view you want to explain. Pakistan’s economy has always been on the verge of collapse. Afghanistan’s current economic situation is also extremely bad, with little impact on Pakistan. The country with the largest real investment in Pakistan is China. The impact of China's national investment policy on Pakistan will be obvious.
China also will capitalize on Afghanistan, so will Russia. They're already cutting deals with the Taliban and so whatever investment opportunities Afghanistan might provide, China will be sure to set up shop. Also makes you think if Afghanistan and other middle eastern countries will begin to have a dependency on China if any sort of relationship is established. Having terrorist groups concede to the Chinese is the most predictable outcome, but anything's possible I guess.