China and Pakistan are surely friends. But Nuclear Submarine is not something can be traded between friends. China certainly will not be against any try by Pakistan. But I doubted China will transfer these sort of thing to Pakistan unless USA cross the bar too much on Indian nuclear issue.Perhaps but if need arises important stuff can always be acquired from a time tested friend.
BTW, no offense, it is just national interest.
Many Chinese always think that Russia lease a nuclear submarine to Inidia is reckless for international politics. Maybe Russian have different mindset, who knows.
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