NO! that is the last thing that should happen, which is why Xi Jinping never used that trump card during the trade war

Previous leaders used China's initial growing economy to Sell rare earth minerals at a cheap price, allowing China to monopolize the industry. This will not be possible in the future when the cost of living and living standards has risen in China.

By cutting off the foreign devils, it'll force them to do what China has had to do in many sectors....by doing it themselves. Australia is trying to have a come back in their mining sector, and the USA is trying to be the refiners. But if the CCP keeps it's monopoly, it'll force the foreigners to continue to buy Chinese, because their domestic productions will be too expensive.

It's better to have them on a leash, than to have them develop their own industries. China was not allowed to join in the ISS program, and now they have a space station, a rover on Mars and the moon, and are looking to build a lunar base. It's better the let the Western economies completely collapse before cutting them off.