High standards

Unlike community policing, which centers on everyday governance, criminal investigation units typically handle cases with broader social impact.

"In the police system, criminal investigation often takes the lead in major cases," He said. "We coordinate resources and organize joint operations."

That role, he added, requires strict self-discipline and continuous learning. With nearly 30 years on the force, He believes effectiveness comes from constantly assessing new situations and flagging problems early.

"When I train younger officers, I'm very strict," he said.

"But strictness is a form of care. The real problem is failing to notice an issue. Once you identify it, the key is solving it — together."

Discipline becomes even more critical in emergencies.

Zhang Xin, an officer with the special police unit of Gongxian's public security bureau, is responsible for emergency response and high-risk operations.

He said some missions involve confronting armed suspects. Officers may face knives, firearms or even explosives, often while assisting criminal investigators in the arrest of dangerous individuals.

To meet those demands, Zhang said, daily training is essential. It includes physical conditioning, weapons handling and tactical coordination, along with the constant refinement of operational procedures.

But skill alone is not enough. Zhang emphasized the importance of psychological resilience and clear judgment under pressure.

"The real challenge is applying tactics accurately in complex, fast-changing environments — and doing so strictly within the boundaries of the law," he said.