If you still have not figured out why tariffs and China have become a central concern, it has to do with these images. I understand most do not fully understand economics so I provide this article. China overtook the US as global manufacturer as shown below (https://www.voronoiapp.com/trade/-Global-Trade-Dominance-US-vs-China-2000--2024-4080).
As an exporting nation, China is at the top (https://www.visualcapitalist.com/the-worlds-largest-exporters-of-goods/).
As many use to not think tariffs matters in causing the US Civil War, the latest concerns show tariffs can be very inflammatory in being changed, and result in trade wars if not out right war.
China has dominated the export to the majority of countries. This happened due to China joining the World Trade Organization. This video explains the problem.
There are others who noticed what Trump was doing and still think he has a distinct plan as video below shows.
While there are revisions in the opinion, it still comes back to a defense of the US economy by Trump.
Anyways, I hope this orient you to as what is going on.