Though a more friendly tone would be more pleasing to the ears, I appreciate the opportunity to go deeper into geopolitics, if you are interested. Though I never hope that in reality relations would get to such a point.
That is why there is a route from China through Myanmar in the making, also directly accessing the Indian Ocean. Western China may suffer a bit through that time period (higher costs) but trade can be diverted towards Kazakhstan-Russia-EU corridor, other portions of trade can travel a bit further to coastal China or Myanmar. Ukraine is proposing a new route from the Black Sea to Caspian to Central Asia to China. This is not China's doing, it's because Ukraine wants to bypass Russia, countries want to access China's market out of their own will. One route closes, another one sees greater attention.
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Maybe, China would be compelled to use Chabahar through the Central Asian route in that situation. It will enable the similar access as CPEC. Once Pakistan antagonizes China, India would find a good opportunity to take advantage, China doesn't have to do much in that case.
If Pakistan severs CPEC, many projects would go unprofitable due to lack of trade and investment from China and associated effects. Iran would take advantage of this situation to promote Chabahar route along with Indian backing to eventually break free from sanctions. Gulf States' investment would follow into the route instead of to Pakistan. Due to being cut off from CPEC, China would be compelled to move the off-shored industry and investment somewhere else but preferably nearby, thus Chabahar. This fully opens up Afghanistan and the rest of Central Asia for Indian movement. China seeing the threat turns this into an opportunity through a deepening relationship with India to avoid US forces and proxies encircling China. Afghanistan seeing the opportunity fully antagonizes Pakistan to seek benefits from India. Afghanistan used to be a well off placed when it traded on the silk road, they will want their past glory again (MAGA). Now the landscape is that Pakistan is surrounded by more powerful enemies and countries that don't want to engage with it, investment will not follow all self induced. Though in this situation, the US might have an easier time deepening relations with Pakistan to further Eurasian geopolitical games but under new terms. Destroying/cutting CPEC in my opinion is destroying a major life line for Pakistan and what all its enemies want to see happen because it furthers so many other moves. It would be especially a god send for the enemies of Pakistan if it was self induced.
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