https://www.bloomberg.com/news/features/2022-09-15/china-wanted-ge-s-secrets-but-then-their-spy-got-caught

people in STEM field now really got be careful communicating WITH CHINA, luckily at now at least hard to visit china.

in nowadays ever increasing tension and paranoia, even the most basic collaboration in most harmless field could get you into trouble, better avoid at all.

if really need to, better talk to employer and get clear goahead permission.

stop any fantasy of getting benefits from both sides, have to pick 1. either complete haigui or forget about collaboration with china side.