That is really some high quality BS you have written. Kudos for the imagination and creativity ..Technically yes China could invade the US provided that there is already surprise element to their favor because nobody will expect China attempting that but logistically they could due to 3 reasons..
1. The US thinks it can't be invaded hence their defenses at home is not great because they don't even worry about that..
2. With a surprise element favor China could land one morning in California with around 1-mil forces landing in the first wave of invasions they could be able to subdue California pretty quickly but then run into a resistance as the Americans will be sending in waves after waves of forces and the chinese forces will be able to hold their ground conventional for upto 1-2 years provided they can logistically land 1-mil forces but if the chinese win the air-superiority battle and the oceans they can land as many troops as they want to back up the remaining it will become a gritty battle but China will eventually overrun the US but it will come at a great cost as the American civilians are armed but I think they will surrender after the army is crushed...
It could probably take between 5-6 years tough war fought inside the US..
3. The US under-belly is weak in my honest opinion because they only focus on offensive war since they live so far away from all the theaters and an invasion being attempted on them is not even in their dictionary. There is a sense of security in their opinion which in my opinion is a fools sense of security nothing more or less China can logsitically do it if they are obsessed with it but the US generals will never in their wildest dreams think about it but China will attempt to bring it to the US at the event of war China won't only strike the US with Nuclear weapons but attempt to invade it fully. China will not release American ever again if it ever WERE TO take it.. The course of history will change completely and a new world order.. The Chinese will become the dominant force in north America kicking out everything they don't want and harvest the country for resources in the next couple of centuries and build their own futuristic settlements into the next 2-3 centuries which will be called ''the Chinese golden age''
I was looking for some comedy movie in Netflix, but your comment supplemented my daily dose of comedy requirements