No its not like this. Chinese guys are working at very top level. You will see Pakistanis working everywhere on CPEC. CPEC is something that every Pakistani is witnessing. I have seen many Chinese(males) travelling on roads, but never seen any Chinese(Females) travelling on the roads
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Now tell me, how can Pakistani men marry someone who is not around. Similarly, Chinese guys are always under tight security(monch wala foji, Police walas and "terrorists" like this). And of course this situation is also not favorable for marriages(at least not in our Country). So, your hypothesis fails here.
Hence you get a F grade. Re-submit.