I agree with Cybernetics. It's unfair and short-sighted to blame the many for the actions of the few. Especially when the few are conducting these terror actions specifically to try and scare China away.
In the last 15 years, 63 thousand Pakistanis have died as a result of terrorist activity. This does not count 'collateral damage' from American drone reprisals (another 80-ish thousand, mostly civilians). You are trying to make it sound that Pakistani people are killing Chinese because they are ungrateful, when in reality the Pakistani people are dying and bleeding every single day from the actions of the very same people who attack the Chinese.
Why? Because it is clear that Chinese help brings real change, every inch of road built with Chinese help punctures through the isolation that so many areas in Pakistan are mired in. When isolation ends, civilisation begins.
Look at Indonesia's Papua. When we first started the Trans-Papua road in 2014, the separatist rebels targeted our construction crews, killing dozens of innocents and destroying vital heavy machinery. Despite that, Indonesia persisted. Military engineers, State Owned Enterprises (SOEs), and volunteers continued construction, carving thousands of kilometres of road through forest, mountain, and marsh. As a result long-isolated areas now had access to healthcare, education, and goods. Prices of oil in some areas dropped by 80% as logistic costs plummeted.
3 years later, rebel support weakens everywhere the Trans-Papua road reaches. After all, why support rebels that can only bring death and misery when the government bring prosperity and hope? More than a thousand former rebels have turned themselves in, receiving amnesty and employment in return to swearing fealty to Indonesia. That is why the Chinese are targeted, because people know that with Chinese help, the Pakistani government can turn things around. They fear the stability that prosperity brings.