So we can agree that sanctioning and blockading countries is effectively an act of war when the US and its vassals do it but if China were to do it, no one on the international diplomatic stage would care at all and would let it slide with no reprisals.
You have not thought this through. At all. It is pathetic.
Yeah the PRC just popped into existence and was never poor and destitute and being hunted by fascists you're right we shouldn't do anything and if the Chinese don't sacrifice themselves by the millions they are the reason why everyone around the world suffers.
Entitled, pathetic behaviour.
Go and grab a gun and fight for the Palestinian resistance otherwise stfu I swear to god. Trade isn't support! Trading with the entity is no worse than trading with the US itself.
Cuba is building up its solar energy infrastructure and is able to do so purely because of the existence of China. The global south is able to develop past neocolonial condemned poor development solely because of the USSR and now China. They are fulfilling an important role even if you personally would rather see a few million Chinese people die for the cause.
Boycotting Israel would be a unilateral movement of active hostility that, unfortunately, would be viewed with hostility by the US and its vassals. China gets away with bilateral trade wars because they are acting in response to actions taken against it directly, not for a third party.