I'm not kidding this is literally their argument.
China stole secrets from Western companies that developed the IP for EVs, HSR, 5G, bio and fintech and because cost of production is so low there, now those firms are all out of business and can't compete.
In EVs Chinese companies like BYD obligatory have to develop their own IP ironically to keep cost down, Western EVs are basically luxury cars, Chinese EV companies have to innovate to balance on quality/price. Would be impossible for BYD to compete using luxury brands technologies.

5G huawei is the biggest patent filler so they are going to stole their own secrets?

HSR has to accommodate to national needs, mainly because HSR are government projects, so China has to innovate technologies that not only allows then to keep cost down but meets their own national technological standards. Just "stoling" technologies is not going to cut it if they are dependent on components that only meet other countries technological standards.
Same for Biotech, is a technology that has to accommodate China health care needs.
And let's not even talk about Fintech, a technology that has to evolve around a Chinese regulatory environment.