It is just hilarious, you have a @Viet who is here begging for Chinese vaccine, what's the matter can't make it yourself? I thought Vietnam can produce whatever China makes. Then you have an idiot who keeps on arguing for the sake of arguing who has no idea what he is talking about. Truly sad state of affairs when China making technological breakthroughs that could benefit humanity, stupidity pops out talking down on Chinese achievements and suggesting it is "stolen" or borrowed tech.