How can it be $4.3 B in US tech when tech in the "US" is almost non-existent?
If you are talking about hardware why that is primarily and almost exclusively made in China. If you are talking about software or specifically Microsoft software most software is "created" offshore and Microsoft like many "US" software company has more employees outside of the US than inside in India, China, Vietnam etc.
So mostly what the Chinese have committed to is investing $4.3 B in their own industries. No new news here...