The ignorance and laziness of these authors is astounding.  
Nobody has to buy manufactured goods from China - it can all be had elsewhere.  Despite their strength as an exporter, they are vulnerable to any shift in purchasing towards alternate suppliers.  Conversely, we have foods and raw materials the world needs ever more badly, and we don't need a trade deal to sell such things.  We have apparently issued a million-odd visas to this country - why?  They should be cancelled ASAP.  That amounts to a huge change in  immigration policy without legislation.  Holders of such visas should not be allowed to buy property here -  citizens and PRs only.  If we can sell a few things to China - fine.  But not military technology, for heaven's sake!  Finally, China will try to affect the next election to keep their puppet in power - we have to prevent that interference.