Bruh. At this point, Chinese breathing fresh air is a national security threat to the US according to their logic.
With the tomfoolery that comes out of the US over the past years, what do you expect?
You even have a US Space Force leader claiming that China is posing tremendous threat against the solar system:
I won't be surprised if someday in the future the US would care more about the "wellbeings, liberty and rights" of Martians rather than their own homeless people sleeping in a dark alleyway just across the Billionaire's Row.
Thanks, USA!
However, back to the main point - We know that China lags far behind the US in terms of carbon emissions per capita.
We also know that China leads the world in aggressive decarbonizing and greening efforts in order to achieve the Zero-Carbon Goal by 2060. Some analysts even projected that China might be able to reach her peak carbon emission goal earlier than projected.
By then, who knows, maybe some clown+senile people in the US government would claim:
"China has more fresh, clean air than us! China can produce more fresh, clean air than us! That means China is a national security threat to US because China STOLE THE TECHNOLOGY OF OUR FRESH, CLEAN AIRRRRRR!!!"
and
"China managed to make her air fresher and cleaner. BUT AT WHAT COST??!"