Why would China be desperate?
China offers the cheapest high spec manufacturing in the world. If the US doesn’t buy that manufacturing, that leaves the rest of the world. Of course China wants American money, but it’s not going to devastate their economy in the short term. It’s a reasonable cost for providing China with so many opportunities, which they are aggressively pursuing, to cultivate deep seated international power.
The prevalence of Chinese manufacturing actually is a national problem for the US. While China has its pick of buyers, the US is stuck with one seller. The US should have been working for twenty years with India, Pakistan, Brazil, Indonesia, Vietnam, and maybe even some counties in Africa to create access to alternatives. It didn’t.
Weaning the US off Chinese manufacturing would take decades of elegant economic policy and diplomacy featuring several countries. China knows this is where it actually has power over the US.
I’ve worn glasses about sixteen hours a day my entire adult life. Got my first pair around 10. Acclimating took maybe four or five days of minor discomfort. The improved vision was incredible and as a child I had child durability, so I didn’t mind the discomfort. I vividly remember how strange it felt for air to hit my face with glasses on while walking or running.
Every time I get a major prescription update it takes two or three days to feel “right”. Until then I have some disorientation. I would expect an adult who hasn’t consistently worn glasses to feel that more keenly.
If I had continued eye strain after three days of constant and consistent wear, I would call the optometrist. If it lasted a week and the optometrist was blowing me off I’d consider my options. Some prescriptions are better than others. I could tell you exactly when I got my best prescription, it was life changing. I didn’t know people could see like that. I’ve never had a “bad” prescription to the best of my knowledge, every time I’ve updated it has been an improvement.