Sniffer dog "Hei Sa" is pictured with its instructor Jiang Feng in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions. (Photos: Xinhua)

Sniffer dog "Hei Sa" is pictured with its instructor Jiang Feng during training in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" and its instructor Jiang Feng seek suspicious items during a training session in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" takes a rest after a training session in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" plays with its instructor Jiang Feng during training break in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" poses for a photo with its instructor Jiang Feng in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" and its instructor Jiang Feng attend a training session in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" enjoys a haircomb by its instructor Jiang Feng in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" and its instructor Jiang Feng seek suspicious items during a training session in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" takes part in a training session in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" and its instructor Jiang Feng prepare for a training session involving the search for suspicious items in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" and its instructor Jiang Feng attend a training session in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" and its instructor Jiang Feng seek suspicious items during a training session in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" and its instructor Jiang Feng carry out a border check mission in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Jiang Feng, the instructor of sniffer dog "Hei Sa", keep the day's training records in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" takes part in a physical training in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" and its instructor Jiang Feng attend a physical training in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" plays with its instructor Jiang Feng during a training break in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.

Sniffer dog "Hei Sa" enjoys a haircomb by its instructor Jiang Feng in Baishan, northeast China's Jilin Province, June 22, 2020. Sniffer dog "Hei Sa" has stayed with its instructor Jiang Feng for half a year. While off duty, "Hei Sa" is an adorable springer spaniel. However, when it comes to drug detection missions, it will turn into a black and valiant warrior as its name in Chinese suggests. Together with ten other police dogs and their trainers, "Hei Sa" works for the first anti-riot and drug-detecting police dog squad in the borderlands of Baishan. The major tasks of the squad include drug-detection, patrol, tracking and examining suspicious items. The police dogs have gone through intensive training under their instructors and become reliable canine comrades in multiple border missions.