This is the best summary I could come up with:

Specifically, he provided information about the US Navy’s large-scale drills in the Indo-Pacific region, as well as electrical diagrams and blueprints for a radar system located at the US base on the Japanese island of Okinawa.

The US has made what it calls the “Indo-Pacific” region a key security priority, and in recent years has worked on shoring up alliances there to counter China’s ramped-up military presence.

He also used “sophisticated encrypted communication methods” to pass on the information, destroyed evidence and concealed his relationship with a Chinese spy.

In October, following Zhao’s guilty plea, US Justice Department Assistant Attorney General Matthew Olsen said China’s intelligence services “actively target clearance holders across the military, seeking to entice them with money to provide sensitive government information.”

Mr Olsen added that US authorities were committed to combatting Chinese government efforts to “undermine our nation’s security”.

Jinchao Wei, 22, a naturalised US citizen, is accused of conspiring to send national defence information to a Chinese agent.

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