Thirty years ago Pakistani nationals, from a nominal “friendly” country at the time, were attending American military technical schools. India has been more closely involved with Russia.
China and India are somewhat adversarial. China might be sufficiently neutral via Pakistan.
China neutral with Pakistan.....umm, you really need to brush up on your history. If it weren’t for China, Pakistan wouldn’t be existing today. China is Pakistan’s largest supplier of weaponry and the source of its nuclear weapons.
And they have been allies for over 50 tears.