File photo taken with mobile phone on Aug. 21, 2019 shows officers of the coast guard checking tip-offs at sea. Chinese coast guard authority has dismantled more than 10 major criminal gangs engaged in illegal sea-related activities in the past three years. China's coast guards at all levels have launched campaigns and investigated more than 190 tip-offs, arresting more than 140 suspects, said the authority. (Photo by Zhai Shaohua/Xinhua)

 

Photo taken with mobile phone on March 26, 2020 shows a vessel of the coast guard intercepting a vessel suspected of smuggling at sea. Chinese coast guard authority has dismantled more than 10 major criminal gangs engaged in illegal sea-related activities in the past three years. China's coast guards at all levels have launched campaigns and investigated more than 190 tip-offs, arresting more than 140 suspects, said the authority. (Photo by Zhai Shaohua/Xinhua)

 

A vessel of the coast guard patrols near fishing boats at sea on Aug. 16, 2020. Chinese coast guard authority has dismantled more than 10 major criminal gangs engaged in illegal sea-related activities in the past three years. China's coast guards at all levels have launched campaigns and investigated more than 190 tip-offs, arresting more than 140 suspects, said the authority. (Photo by Zhai Shaohua/Xinhua)

 

Officers of the coast guard promote knowledge on crime fighting at a fishing port on May 4, 2020. Chinese coast guard authority has dismantled more than 10 major criminal gangs engaged in illegal sea-related activities in the past three years. China's coast guards at all levels have launched campaigns and investigated more than 190 tip-offs, arresting more than 140 suspects, said the authority. (Photo by Zhai Shaohua/Xinhua)

Chinese coast guard authority has dismantled more than 10 major criminal gangs engaged in illegal sea-related activities in the past three years.

China's coast guards at all levels have launched campaigns and investigated more than 190 tip-offs, arresting more than 140 suspects, said the authority.

To better collect tip-offs and crack down on crimes, the coast guards made full use of the emergency hotline 95110, set up a report mailbox and offered rewards for the reporting of organized crimes.

They have also cooperated with public security, fishery and maritime affairs authorities.