I wonder if this would be like the joint patrols the US military and the ROK police conduct near US military bases?:
South Korea and China will discuss the possibility of stationing Chinese police officials on its southern island of Jeju if the relevant authorities here consider it necessary, Seoul’s foreign ministry said Thursday.
The idea was raised by a South Korean opposition lawmaker earlier this week amid an increase in crimes by Chinese tourists on the popular resort island.
“The issue of stationing Chinese police (on Jeju) will be actively discussed with China after talks with our relevant departments, including the police, and if they so wish,” the ministry said. “Even if the Chinese police are stationed here, they would not be involved in our public safety activities, but only work with us in terms of sharing information on criminals and cooperating on safety issues.” [Yonhap]
You can read more at the link.
Further Reading:
https://www.rokdrop.net/2016/09/should-south-korea-end-visa-waiver-program-for-jeju-island/