Most likely stolen technology.
In a society where conformity is reverred, there is little incentive to 'think out of the box'. Innovation is discouraged.
That is one of the reasons why the ChiComs are so good at 'reverse engineering', .. rather than inventive thinking.
Steal technology while we have Open Borders ?
Why invest in Research and Developement when the ChiComs have full armies of IT Teckies who can hack the intel of countries who have already tested inventions
and those countries who have already expended energy and monies into R&D , thus saving monies for more aggressivecforms of conquest.
Nah, they bought it from ET fair and square
Why do you think China has been buying all that gold?