You’re the one who straw manned to territorial disputes!
Beijing culturally projects in Pakistan. Capitalism with Chinese characteristics, a growing prevalence of Mandarin being taught as a second language [1], requiring Islamabad embrace Beijing’s foreign policy, et cetera.
(To be clear, this seems fine. Both Pakistan and Russia have proven dangerously incompetent as fully sovereign states. Perhaps being under Beijing is more stable and prosperous.)
What dispute do they have with Pakistan? You mean India?