Wei and his handler agreed to hide their communications by deleting records of their conversations and using encrypted methods of communications, officials claim in the indictment

I guess we have no clue if they actually spying or not (based if they were), but I wanna take this time to reiterate: do not put anything incriminating online, if you were under suspicion from the state for doing something like spying e2e encryption is not going to stop them from finding out