Overview

• Zhang purchased four books marked as confidential from a recycling station for 6 yuan (about $0.85).
• The documents were supposed to be shredded but were instead sold by military personnel.
• Chinese state security praised Zhang for his vigilance and quick reporting.
• The incident has led to a crackdown on mishandling classified materials in China.
• The case highlights ongoing tensions and espionage concerns between China and the U.S.