What made the capture of the ex-soldier difficult for China's Ministry of State Security?

The ex-soldier's capture proved extremely challenging due to his specialized skillset in counter-surveillance techniques and secretive behavior, as reported by the Ministry. His military background had equipped him with advanced knowledge of how to avoid detection while allegedly transmitting sensitive military information to foreign intelligence agencies. These skills made tracking and apprehending him particularly problematic for Chinese authorities, requiring specialized approaches to finally intercept his communications and locate him in difficult terrain. The case highlights the sophisticated cat-and-mouse game that occurs in modern espionage operations.