Are these said researchers? Might explain why they are rushing home.

https://www.bbc.com/news/world-asia-china-64206950

"The information Zheng stole was related to the design and manufacture of gas and steam turbines, including turbine blades and turbine seals. Considered to be worth millions, it was sent to his accomplice in China. It would ultimately benefit the Chinese government, as well as China-based companies and universities."