Veteran shows peers tricks of the trade

Zheng Zhaorui, a veteran immigration inspection officer, may look ordinary at first sight, but his reputation for fighting drug trafficking has made him famous among his peers.

In his 16 years at the Mukang Border Inspection Station in Mangshi city, Yunnan province, Zheng has prevented more than 460 kilograms of drugs - mainly opium, heroin and methamphetamine - from being sold on China's streets.

His notes about drug detection techniques - including locating narcotics hidden in trucks and the human body - and identifying users are included as examples in Narcotics Control, a textbook used in police academies nationwide.