Chinese and Croatian police officers pose for photos in Zagreb, capital of Croatia, on July 19, 2018. (Xinhua/Goran Stanzl)

The first joint patrol between Chinese and Croatian police during tourist season was launched on July 15. (Xinhua/Goran Stanzl)

Six uniformed Chinese police officers will patrol with their Croatian counterparts in Zagreb, Dubrovnik and Plitvice Lakes National Park in Croatia until mid-August to help deal with Chinese tourists-related issues. (Xinhua/Goran Stanzl)