The thing Chinese people are most proud of in their "cultural confidence" is probably something like this:
Invented high-speed rail? Actually, it's bought technology + an extended version.
Invented 5G? The standards were set internationally; just stacking more base stations than others makes it "leading."
Economic miracle? Built on low human rights + environmental costs + foreign sweatshops.
National rejuvenation? Chanting slogans every day until they believe it themselves, then continuing to take deep breaths in the smog.
The result is:
(insert your views here)