China already has 4 nuclear armed neighbours plus potentially three more viz Japan, Soko and Vietnam.
Supplying nukes to Pakistan will be avenged by India at a time and place of its choosing.
India should have been nuked when you were developing your program. You don't deserve it and never did. India does nothing good for the world.
To think Japan and South Korea need your country's help developing nukes, what a laugh.
The Chinese regime is so used to trampling over its own people that it sometimes (always?) forgets that the rest of the world are not as easy to manage. Majority of world governments distrust China and with good reason. The onus is not on me to do/prove anything. Let China take care of the fact that all its immediate neighbours detest its regime and are more comfortable dealing with a Western nation on the diplomatic front. For all of its great power ambitions, China is friendless in its own backyard. The truth hurts, I know.
LOL
India is hated by all neighbors, China is liked by most.