It’s not mental illness, it’s just damn PRCs being spoilt rotten. I can tell u almost all PRCs have this misguided sense of superiority and I won’t be bullied mentality.
In their own country, they are like dogs who can’t even use Facebook without a VPN. So when they do venture overseas or stay abroad, they become extra rebellious to make up for it.
In addition, the selfish mentality is also deeply ingrained into them due to the practices in China. If u help an old lady who had fell down due to her own fault, you may still be held responsible for medical fees from her fall because no one believes ppl will help someone for no reason.