Honestly the Indian subcontinent is a fr1cking mess - One of the major legacies of the British Empire, of course.
In the meantime, how's Pakistan's relationship with Russia? China is seen to be pro-Pakistan in the eyes of New Delhi, and US is seen to be backing India.
Seems like Russia could be one of the (if not the only one) major world power that can become the probable middle ground for both New Delhi and Islamabad to negotiate and settle for a ceasefire - Whether that be political or military.
In the meantime, until the crisis resolves, Beijing better have the PLA Western Theater Command be put on CRL 3* (especially the entire border regions), and be prepared to upgrade to CRL 2*, depending on the military developments in India and Pakistan. The PLA Navy South Sea Fleet should also be put on standby status.
*CRL = PLA's Combat Readiness Levels (somewhat akin to the US Military's DEFCON)