Chinese companies, helped by their government, massively and shamelessly copy Western research, development, and products. No respect for copyrights and intellectual property. Take AI for example: years of research and billions invested by US players, only to get outstripped by a Chinese newcomer. Does anyone seriously think Deep Seek was able to develop its top-rated model on its own, in no time and with just 5 million dollars?
There is a lot of anti-Chinese sentiment being expressed here, remember this is an international forum.
If you study the scientific literature, you'll see that more than 50% of the scientific papers published in the top peer-reviewed engineering journals are from China, and this has been the case for around 5 years now. The investment in R&D in China has been immense in the past decade or two. This huge scientific effort is quite focussed on "useful" engineering and is now filtering through to companies and products.
That's what we are seeing now: China is the place where there is most innovation ... not withstanding this "copycat" headset by Vivo! But look to other developments in China, such as XREAL's Air Smartglasses, excellent usability and performance for <$500, including your own stereo camera for creating your own content.
As for "Take AI for example: years of research and billions invested by US players, only to get outstripped by a Chinese newcomer." that how progress is made: people beaver away on a topic but get stuck into one way of thinking ... then someone comes along and points out an "obvious" idea (only obvious afterwards!) which changes the approach drastically. I know several people in AI who felt the conventional brute-force approach to AI/ML of the big US companies was stupid but they could come up with an alternative ... until Deep Seek pointed out the "obvious".
It's called progress and we should all welcome it.