If China reduced their tarriffs proportionally, they would be at (125/145)*30 = 25.862%, not 10%. It looks like the US demanded that they can always charge 20% higher tarriffs...
Though it's worth noting China's initial counter-tariffs only targeted key products, so the presentation isn't technically incorrect.
That's why I said it is a good propaganda.
They have a good diagram here:
https://edition.cnn.com/2025/04/12/business/us-china-tariffs...
This means a lower general rate that the US have imposed on Taiwan (32%), btw...