Good point! The Huawei case should put the rest of the world on notice about the threat of US technological dominance along with the use of the financial and judicial system as a weapon to crush the competing countries.
"absolute" dependence is a bit of a stretch... I'm sure all nations are careful about "putting all their eggs in one basket".
China has a number of advantages:
* Highly developed manufacturing/shipping coordination
* Well trained assembly line workers
* Government supplied infrastructure and subsidies (effectively an internal "Marshall Plan")
* Large population that is more than big enough to support its own internal middle class market development in the same way as the US/EU/"West" did after WW2
* Relaxed IPR environment in the same way as the US (and most other countries) did when developing (the US blatantly stole IP from the UK in the late 19th/early 20th centuries)
China also has a number of disadvantages:
* Lack of rule of law
* Central government planning lacking the flexibility to react to rapidly changing events
* Inhibited creative class by the nature of a communist/totalitarian ruling class.
But saying that China "absolutely depends" on the US is untrue. The nature of international trade is that both countries are suffering due to the current US administrations trade "policies". Tariffs are inherently a tax on the consuming nation, not the producer. China has already found a) alternative suppliers for US products (eg soybeans) and b) alternative markets (SEA, APAC, EU, ME).
