China detains military worker for allegedly spying for CIA

Chinese national Zeng recruited by CIA operative in Italy and provided classified military information
Zeng developed close relationship with undercover CIA agent and signed espionage agreement
Zeng received CIA training and funds in exchange for sensitive intelligence on Chinese military
China has increased focus on national security, counter-espionage laws, and citizen participation
Case handed to Chinese prosecutors for indictment as part of ongoing intelligence battle with US